Part Pallet Deal of Flowpoint Smooth Charcoal | 40 x 25kg Bags | Free Delivery
About the product
UltraScape Flowpoint Smooth Paving Grout – Charcoal | 40 x 25kg Part Pallet | Free Delivery
"Fine-Aggregate Flowable Grout for Porcelain, Granite Setts & Darker Natural Stone — Joints from 3mm, Sets in 15 Minutes, Lasts Up to 40 Years"
This 40-bag part pallet deal includes free standard delivery and suits larger domestic projects and smaller commercial schemes. UltraScape Flowpoint Smooth Charcoal combines a finer aggregate finish (joints from 3mm) with a bold charcoal tone, ideal for charcoal or grey porcelain, granite setts, slate and darker natural stones. BS 7533 compliant, 49.6N/mm² compressive strength, sets in 15 minutes, open to vehicles in 4 hours. Supplied in 25kg showerproof bags.
For best results, use a neoprene squeegee. A temporary sealer such as Tile Rite Patio Prep is highly recommended for porous or darker stones.
Need a full pallet? See our 56-bag full pallet — also includes free standard delivery. Also available in Natural Grey.
Coverage Guide (approximate per 25kg bag)
- Porcelain (600×900, 5×20mm joints): 1 bag ≈ 30m²
- Natural Stone (mixed pack): 1 bag ≈ 12–20m²
- Granite Setts: 1 bag ≈ 1.5–2m²
Questions? See our Flowpoint FAQs, download the technical datasheet (PDF), or call 0330 122 1025.
Calculate required quantity
Part Pallet Deal of Flowpoint Smooth Charcoal | 40 x 25kg Bags | Free Delivery
See full delivery info →
For Highlands, Guernsey, Jersey, Isle of Man, and Isle of Wight – call 0330 122 1025.
See full delivery info →
For Highlands, Guernsey, Jersey, Isle of Man, and Isle of Wight – call 0330 122 1025.
How much you will need?
Flowpoint Smooth Charcoal — Full Technical Information
Product Overview
UltraScape Flowpoint Smooth Charcoal is a rapid-setting, flowable, cement-based paving grout with a finer aggregate finish for external use. Joints from just 3mm. Conforms to BS 7533. Approved for use on the London Underground and London Overground. NBS Source registered. Supplied in 25kg showerproof bags.
Performance Data
| Property | Value |
|---|---|
| Classification | BS 7533 |
| Compressive strength | 49.6N/mm² |
| Bond strength | Exceptional |
| Shrinkage | Shrinkage compensated |
| Initial set | 15 minutes at 20°C |
| Open to foot traffic | 1 hour |
| Open to vehicular traffic | 4 hours |
| Expected service life | Up to 40 years |
| Permeability | Non-permeable (impermeable bed required) |
| Weather resistance | Can be applied in light rain |
| Frost resistance | Do not apply below 3°C or if frost expected within 24 hours |
Application Data
| Property | Value |
|---|---|
| Water requirement | 4.25 litres per 25kg bag |
| Mixing time | 3–5 minutes |
| Working time after mixing | Approx. 4 minutes — mix one bag at a time |
| Joint width | 3–50mm |
| Joint depth | 20–200mm (single application) |
| Supply format | 25kg showerproof bags (pre-mixed dry-pack — just add water) |
| Colours available | Charcoal & Natural Grey |
Coverage Guide (approximate, per 25kg bag)
| Paving Type | Approximate Coverage |
|---|---|
| Porcelain Paving (600×900, 5×20mm joints) | approx. 30m² |
| Natural Stone (mixed pack) | 12–20m² |
| Granite Setts | 1.5–2m² |
Approvals & Certifications
- Conforms to BS 7533
- Approved for use on the London Underground and London Overground
- NBS Source registered
- Part of the Flowpoint range — in use for over 25 years worldwide
Storage & Shelf Life
- Shelf life: 8 months from date of manufacture (printed on the white strip on the side of the bag)
- Store in a cool, dry, frost-free area, clear of the ground
- Using after the declared storage period may increase the risk of an allergic reaction
Health & Safety
- Contains cement — wear PPE including gloves and eye protection
- Wet cement can cause serious skin burns
- Wash hands and exposed skin thoroughly after use
- Keep out of reach of children
- Full SDS available on request or from the UltraScape website
For the full technical datasheet, download the PDF here. For project-specific advice, get in touch or call us on 0330 122 1025.
How to Mix & Apply UltraScape Flowpoint Smooth Paving Grout
Step 1 — Preparation
Without a temporary pre-sealer (standard method):
- Ensure joints are clean and free from debris, dust and loose material.
- Thoroughly pre-soak the paving surface and joints — the paving must be properly wet before you begin.
- Remove all standing or ponded water from the surface and joints — a leaf blower is ideal. The paving should be damp, not waterlogged.
- Keep the surface moist throughout application by misting with a soft spray of water.
With a temporary pre-grout sealer (e.g. Tile Rite Patio Prep or Nexus ProJoint Pre-Grout):
- Apply the temporary sealer and allow to dry per product instructions.
- Do not pre-soak the paving. The sealer acts as the protective barrier — water not required until clean-down.
- Remove standing water from joints with a leaf blower before grouting.
- Always carry out a small trial area first.
Step 2 — Mixing
- Add 4.25 litres of clean water per 25kg bag into a clean vessel.
- Add Flowpoint Smooth powder to the water and mix for 3–5 minutes until smooth, lump-free and pourable. Use a slow-speed drill and paddle mixer.
- Only mix what you can apply in approximately 4 minutes.
- Never remix or add extra water once mixed.
Step 3 — Application
- Pour the mixed grout onto the paving surface.
- Using a neoprene squeegee, force the mortar into the joints, working methodically. Top up any joints where mortar has slumped.
- Remove as much excess mortar from the surface as you go.
- If not using a pre-sealer, keep the surface constantly misted throughout application.
- Once initial set is reached, clean down thoroughly with a brush and copious clean water. No mortar must remain on the surface.
- Wash all tools frequently.
Step 4 — Trafficking
- Foot traffic: after 1 hour (at 20°C)
- Vehicular traffic: after 4 hours (at 20°C)
- Cool temperatures retard set; warm temperatures accelerate it. Avoid applying in direct sunlight or during frost.
Technical Specification
| Property | Value |
|---|---|
| Water requirement | 4.25 litres per 25kg bag |
| Mixing time | 3–5 minutes |
| Working time after mixing | Approx. 4 minutes |
| Initial set | 15 minutes at 20°C |
| Open to foot traffic | 1 hour |
| Open to vehicular traffic | 4 hours |
| Joint width | 3–50mm |
| Joint depth | 20–200mm (single application) |
Important Precautions
- Wear appropriate PPE — avoid skin and eye contact. Wet cement can cause serious burns.
- Never remix or add extra water once mixed.
- Do not apply below 3°C or if frost is expected within 24 hours.
- Do not apply in direct sunlight.
- Store in a cool, dry, frost-free area. Shelf life: 8 months from date of manufacture.
About the product
UltraScape Flowpoint Smooth Paving Grout – Charcoal | 40 x 25kg Part Pallet | Free Delivery
"Fine-Aggregate Flowable Grout for Porcelain, Granite Setts & Darker Natural Stone — Joints from 3mm, Sets in 15 Minutes, Lasts Up to 40 Years"
This 40-bag part pallet deal includes free standard delivery and suits larger domestic projects and smaller commercial schemes. UltraScape Flowpoint Smooth Charcoal combines a finer aggregate finish (joints from 3mm) with a bold charcoal tone, ideal for charcoal or grey porcelain, granite setts, slate and darker natural stones. BS 7533 compliant, 49.6N/mm² compressive strength, sets in 15 minutes, open to vehicles in 4 hours. Supplied in 25kg showerproof bags.
For best results, use a neoprene squeegee. A temporary sealer such as Tile Rite Patio Prep is highly recommended for porous or darker stones.
Need a full pallet? See our 56-bag full pallet — also includes free standard delivery. Also available in Natural Grey.
Coverage Guide (approximate per 25kg bag)
- Porcelain (600×900, 5×20mm joints): 1 bag ≈ 30m²
- Natural Stone (mixed pack): 1 bag ≈ 12–20m²
- Granite Setts: 1 bag ≈ 1.5–2m²
Questions? See our Flowpoint FAQs, download the technical datasheet (PDF), or call 0330 122 1025.
Part Pallet Deal of Flowpoint Smooth Charcoal | 40 x 25kg Bags | Free Delivery
Rapid-Set Flowable Paving Grout for Porcelain, Granite Setts & Darker Natural Stone — Joints from 3mm — 40 Bags with Free Standard Delivery
UltraScape Flowpoint Smooth Charcoal is one of the best rapid set flowable paving grouts on the market — combining the finer aggregate of Flowpoint Smooth (joints from just 3mm) with a bold charcoal tone ideal for charcoal or grey porcelain, granite setts, slate and darker natural stones. This 40-bag part pallet deal includes free standard delivery and suits larger domestic projects and smaller commercial schemes. Need a full pallet? Our 56-bag full pallet also includes free standard delivery.
BS 7533 compliant, sets in 15 minutes at 20°C, joints from 3–50mm wide and 20–200mm deep, open to vehicles in 4 hours, 49.6N/mm² compressive strength, supplied in 25kg showerproof bags — Flowpoint Smooth Charcoal is a professional-strength flowable paving grout for porcelain, granite setts and tight-jointed darker natural stone.
We're a small, family-run business — I'm Cleo, the owner, with over 25 years in the construction industry working with businesses including Tarmac and Instarmac. Flowpoint Smooth Charcoal is a firm favourite for contractors working with porcelain and granite setts — the finer aggregate flows cleanly into tight joints, and the charcoal tone gives a crisp, contemporary finish.
If you're jointing charcoal or grey porcelain, granite setts, slate or darker natural stone — and particularly if your joints are narrower than 5mm — Flowpoint Smooth Charcoal is the product we'd confidently recommend. With darker limestones, apply a temporary pre-sealer such as Tile Rite Patio Prep before grouting. Unsure? Read our black limestone guide or give us a call.
UltraScape Flowpoint Smooth Charcoal is a fast-curing, flowable, cement-based paving grout with a finer aggregate finish, designed for joints from just 3mm. Mixed with water on site, poured across the paving surface and worked into joints with a neoprene squeegee, it sets to leave strong, durable, weed-resistant, void-free joints.
What Do Industry Experts Say About Flowpoint?
Flowpoint Smooth has been trusted on demanding projects for over 20 years. We asked Gareth Wilson, one of the UK's most respected hard landscaping experts, for his view.
Gareth has 30 years in the landscaping trade, 30 Royal Horticultural Show (RHS) awards for show garden construction, and now works as an expert witness in hard landscaping:
GARETH WILSON — Hard Landscaping Expert & RHS Award Winner
"Some landscapers are stuck in their ways and they don't like change. Their attitude is, 'I've been doing this for 20 years… Why should I change now?' And some are quite rightly scared when they consider pouring Flowpoint onto their slabs — at the end of the day, you are pouring a cementitious slurry directly onto the pavers. It goes against everything that you've been taught. But Flowpoint has been developed so it doesn't stick to the paving."In addition to its British Standard rating and the strength of the product, it's also the speed at which you can install it. If you're going to be on your hands and knees with a trowel and a three-to-one mortar mix, it will take you about five times as long to install, compared with using Flowpoint. Flowpoint is just so easy and quick to install that it makes you money. It's a well-priced product and, in my view, a landscaper's friend. Ultimately, it means less time on the job and more profit in your pocket."
Approved for Use on the London Underground & Overground
Flowpoint Smooth is approved for use on the London Underground and London Overground and is NBS Source registered — making it straightforward to specify on commercial and public realm projects.
Common Flowpoint Myths — Busted
| Myth | The Truth |
|---|---|
| Myth #1: Flowpoint is a new product | Flowpoint has been in use for over 25 years. Flowpoint Smooth itself has been in use for over 20 years. |
| Myth #2: You need specialist equipment | A paddle mixer and a long-handled neoprene squeegee are all you need beyond standard paving tools. |
| Myth #3: It's only for experienced contractors | Straightforward once you've seen it done. Watch a demonstration, follow the instructions, and do a trial area first. |
| Myth #4: Flowpoint sticks permanently to pavers | Keep the surface damp and time your work around the weather. In warm conditions, work during cooler parts of the day. |
| Myth #5: It causes cracking and low spots | Cracking typically happens when grout is washed off too early. Use the thumb test — if the joint still feels soft, wait longer. |
| Myth #6: It works with every stone type | Flowpoint Smooth works with most paving materials. The exception is black limestone without a temporary pre-sealer, which risks oxidisation. |
| Myth #7: Flowpoint causes efflorescence | Efflorescence is not a product fault — usually caused by insufficient bed drying time, excess water in the mix, or pressure-washing too early. |
| Myth #8: The paving must be kept soaking wet | Damp, not saturated. Remove standing water before grouting, then mist the surface throughout. |
| Myth #9: Slabs must cure for 28 days first | The key is a solid, set, dry bed — not a fixed number of days. The manufacturer recommends 21–28 days, but contractors often grout sooner when conditions allow. |
Flowpoint Smooth — Key Specification
- This deal: 40 x 25kg showerproof bags with free standard delivery. Need a full pallet? See our 56-bag full pallet.
- How to identify your grade on delivery: Flowpoint Smooth bags are orange and blue. Standard is black and orange; ECO is orange and green; Fine comes in tubs. The specific colour (Natural Grey or Charcoal) is printed on the white strip on the side of the bag.
- Colours: Charcoal (this deal) & Natural Grey (40-bag deal)
- Set time: 15 minutes at 20°C
- Open to foot traffic: 1 hour
- Open to vehicular traffic: 4 hours
- Classification: BS 7533
- Compressive strength: 49.6N/mm²
- Exceptional bond strength
- Shrinkage compensated
- Approved for use on the London Underground and Overground
- NBS Source registered
- Joint width: 3–50mm | Depth: 20–200mm
- Lasts up to 40 years without re-grouting
- Suitable for use in light rain
- Shelf life: 8 months (unopened, correct storage)
Suitable Paving Types
- Charcoal or grey porcelain (joints from 3mm)
- Granite setts
- Slate
- Darker sandstone and Indian Stone
- Yorkstone
- Clay pavers
- Concrete flags
- Limestone (use temporary pre-sealer for darker stones)
Flowpoint Grades & Colours — Full Range
| Grade | Colours | Joint Width | Joint Depth |
|---|---|---|---|
| Flowpoint Standard | Natural Grey & Charcoal | 5–50mm | 20–200mm |
| Flowpoint Premium Standard | Stone Grey, Limestone & Yorkstone | 5–50mm | 20–200mm |
| Flowpoint ECO | Natural Grey & Charcoal | 5–50mm | 20–200mm |
| Flowpoint Smooth | Natural Grey & Charcoal | 3–50mm | 20–200mm |
| Flowpoint Premium Smooth | Stone Grey, Limestone & Yorkstone | 3–50mm | 20–200mm |
| Flowpoint Fine | Natural Grey & Charcoal | 2–50mm | 20–200mm |
| Porcelpoint | Stone Grey & Limestone | 2–50mm | 20–200mm |
Approximate Coverage Guide (per 25kg bag)
- Natural Stone Mixed Packs: approx. 12–20m² per bag
- Granite Setts: approx. 1.5–2m² per bag
Use the Flowpoint Calculator on this page for an accurate estimate based on your joint size and paving area.
Frequently Asked Questions — UltraScape Flowpoint Smooth Charcoal (40 Bags)
I'm Cleo, owner of The Paving Experts, with over 25 years in the construction industry working with businesses including Tarmac and Instarmac. I work alongside a small team of incredibly knowledgeable and caring individuals who share the same passion for getting it right. The FAQ answers below come from the questions we're asked every single day.
1. What is UltraScape Flowpoint Smooth?
UltraScape Flowpoint Smooth is a rapid-set, flowable paving grout designed specifically for smooth paving stones and slabs. It produces a seamless, void-free joint that conforms to BS 7533. Pre-mixed in 25kg showerproof bags, it requires only the addition of water on site.
2. What is Flowpoint Smooth used for?
From domestic patios and driveways to town centre pedestrian schemes, pathways and carriageways. Suitable for natural stone, concrete flags and clay pavers, and particularly well suited to smooth or polished surfaces where a seamless, void-free finish is required.
3. How is Flowpoint Smooth different from Flowpoint Standard?
Flowpoint Smooth handles joints from 3mm — two millimetres tighter than Standard (5mm minimum). Its high fluid consistency produces a seamless finish particularly suited to smooth or polished surfaces. Compressive strength, water ratio and trafficking times are identical to Standard.
4. Why choose Charcoal over Natural Grey?
Charcoal creates a bolder, more defined joint that works particularly well with charcoal or grey porcelain, granite setts, slate and darker natural stones. It gives a contemporary, high-contrast finish. Unsure? Send us a photo and we'll advise.
5. What joint widths can Flowpoint Smooth be used for?
3mm to 50mm wide and 20mm to 200mm deep. For joints narrower than 3mm, consider Flowpoint Fine or Porcelpoint (both from 2mm). Give us a call if you're unsure.
6. What is the set time for Flowpoint Smooth?
15 minutes at 20°C. Colder conditions extend the set, warmer ones shorten it. Always use the thumb test before cleaning down.
7. How long before you can walk on Flowpoint Smooth?
Light foot traffic after approximately 1 hour. Allow a little longer in colder conditions.
8. How long before vehicles can drive over Flowpoint Smooth?
Approximately 4 hours. Ideal for driveways and schemes where the surface needs to return to use quickly.
9. Is Flowpoint Smooth BS 7533 compliant?
Yes — conforms to and exceeds BS 7533. NBS Source registered and approved for use on the London Underground and Overground.
10. Can Flowpoint Smooth Charcoal be used on porcelain paving?
Yes — particularly well suited to charcoal or grey porcelain where joints are 3mm or wider. Strongly recommend a temporary pre-sealer such as Tile Rite Patio Prep to prevent grout haze on polished surfaces.
11. Can Flowpoint Smooth Charcoal be used on natural stone paving?
Yes — granite setts, slate, darker sandstone, Indian Stone and Yorkstone. Always carry out a small trial first. For darker limestones, apply Tile Rite Patio Prep to prevent oxidisation.
12. Can Flowpoint Smooth be used on concrete paving?
Yes — suitable for concrete flags. Creates a strong, non-permeable, weed-resistant joint.
13. Can Flowpoint Smooth be used on clay pavers?
Yes — ensure the paving is thoroughly pre-soaked before application on any absorbent surface.
14. Is Flowpoint Smooth suitable for driveways and high-traffic areas?
Yes — with 49.6N/mm² compressive strength and vehicular trafficking possible after 4 hours, well suited to driveways and carriageway schemes.
15. Is Flowpoint Smooth suitable for large paving areas?
Yes — its flowable method is far faster than hand-pointing. Need a full pallet? Our 56-bag full pallet includes free delivery.
16. How do you apply Flowpoint Smooth Charcoal?
Pre-soak the paving and remove all ponded water. Add 4.25 litres of clean water per 25kg bag, mix for 3–5 minutes. Pour and work into joints with a neoprene squeegee. Keep the surface misted. Once initial set is reached, clean down with a brush and clean water. Only mix what you can place in approximately 4 minutes.
17. How much water do you add to a 25kg bag of Flowpoint Smooth?
Exactly 4.25 litres of clean water per bag. Never add more water or remix once the grout has started to set.
18. Is Flowpoint Smooth easy to mix?
Yes — pre-mixed dry-pack. Add water, mix 3–5 minutes with a slow-speed drill and paddle mixer. No specialist equipment required.
19. What colours does Flowpoint Smooth come in?
Charcoal (this deal) and Natural Grey (40-bag deal here). For Stone Grey, Limestone and Yorkstone, see Flowpoint Premium Smooth.
20. Can Flowpoint Smooth Charcoal be used on black limestone?
Yes, with the right preparation. Apply Tile Rite Patio Prep before grouting to prevent oxidisation. Call us for advice on your specific stone.
21. Can Flowpoint Smooth be used in the rain?
Yes — in light rain. Ensure joints are clear of ponded water. Do not apply during heavy rain or when frost is forecast within 24 hours.
22. Is Flowpoint Smooth permeable?
No — non-permeable cementitious grout. Must be used on a solid, non-permeable bed. Contact us if you need a permeable solution.
23. Do I need to pre-seal my slabs before using Flowpoint Smooth?
With a temporary pre-sealer: do not pre-soak — the sealer replaces this step.
Without a sealer: thoroughly wet the paving, then remove all standing water. The surface should be damp, not waterlogged.
24. What is the shelf life of Flowpoint Smooth?
8 months from date of manufacture, printed on the white strip on the side of each bag. Store in a cool, dry, frost-free environment, clear of the ground.
25. How long does Flowpoint Smooth last?
When applied correctly, Flowpoint Smooth Charcoal can last up to 40 years without the need to re-grout.
26. How much Flowpoint Smooth do I need?
40 bags covers approximately 480–640m² for natural stone mixed packs, or around 60–80m² for granite setts. Use the Flowpoint Calculator on this page for a precise estimate, or call us.
27. How do I tell the Flowpoint grades apart on delivery?
The bag colour tells you the grade at a glance. Flowpoint Smooth bags are orange and blue. Standard is black and orange; ECO is orange and green; Fine comes in tubs. The specific colour variant (Natural Grey or Charcoal) is printed on the white strip on the side of the bag.
Watch the video...
Please note: The videos below show Flowpoint Fine being applied. The mixing and application principles are identical for Flowpoint Smooth — the only difference is the water ratio. Flowpoint Fine and Porcelpoint require 3.4 litres per 20kg bucket; Flowpoint Standard, Smooth, ECO and Premium require 4.25 litres per 25kg bag.
Want a full pallet?
View our 56-bag full pallet — includes free standard delivery.
Need a paving primer & bedding mortar?
We recommend the full UltraScape BS 7533 Mortar Paving System — including rapid-strength fine bedding concrete EcoBed, priming slurry Pro-Prime, and flowable jointing grout Flowpoint Smooth.
Questions about Flowpoint Smooth Charcoal, coverage for your project, or which grade is right for your job? Get in touch or call us on 0330 122 1025 — we're a small team but we know our products inside out and we're always happy to help.
- Brand: Instarmac
- Product Type: Paving Grout
- SKU: TPE-FSCH40X25KGS
- Weight: 1000.0 kg / 2204.62 lb
Delivery & Returns Info
Our delivery charges are calculated based on the size and weight of your order. When you add items to your basket, the delivery charges are displayed. Small orders are distributed via courier; larger orders via Pallet Network. Collection is available from our Tamworth depot by request (contact us first to arrange on 0330 122 1025).
Please note, there is a slight surcharge for areas that are outside of our locality, charges calculated at checkout.
| Weight and size | Next Working Day* Order before 1PM (excl. VAT) |
Standard 3-5 Working Day (excl. VAT) |
|---|---|---|
| 0-13KG (1 small bag/tub) |
£14.00 | £9.00 |
| 13.01-25KG (1 large bag/tub) |
£16.00 | £10.00 |
| 25.01-50KG (2 bags/tubs) |
£26.00 | £19.00 |
| 50.01-75KG (3 bags/tubs) |
£36.00 | £28.00 |
| 75.01-100KG (4-5 bags/tubs) |
£46.00 | £37.00 |
| 100.01-249KG (6-9 bags/tubs) |
£60.00 | £45.00 |
| 249.01-750KG (10 bags plus) |
£68.00 | £48.00 |
| 750.01KG plus (30 bags plus) |
£75.00 | £55.00 |
| Full Pallets (56 bags/52 tubs) |
£88.00 | Free of charge |
| Next Working Day delivery (Premium 1-2 Working Day Service) | +avg. £5-10 Extra. Click here for prices |
|---|---|
| Scotland Delivery Service (Deliveries into some parts of Scotland can take 8-10 working days) | Click here for prices |
| Local Delivery & Click & Collect: | Email: orders@thepavingexperts.co.uk |
Delivery Information
- Prices apply to mainland England and Wales. Scottish delivery slight surcharge.
- Orders are packed and dispatched Monday–Friday (excluding weekends & public holidays).
Next Working Day Delivery
- Order before 1PM → same-day dispatch.
- Order after 1PM or on weekends/bank holidays → next working day dispatch.
- You'll receive tracking updates via email/SMS if you provide your details.
Delivery Examples
- Mon before 1PM → Packed Mon, delivered Tue.
- Mon after 1PM → Packed Tues delivered Wed.
- Fri before 1PM → Packed Fri, delivered Mon.
- Fri after 1PM/weekend → Packed Mon, delivered Tues (or Wed after a bank holiday).
- Standard Service: 3–5 working days.
Notes
- Occasional delays due to manufacturing, supply, or courier issues may happen, but we'll keep you informed.
Returns, cancel up to 14 days from date of delivery. Product to be returned in the same condition & packaging. No returns for cementitious & perishable products. You are responsible for the cost of returning goods to The Paving Experts, 20% admin restock fee applies. Need further info, click here.
For further detailed delivery information click here →
For any advice; technical, product, stock or quantity needed, call our team on 0330 122 1025.
Please see our FAQs for more information.
Part Pallet Deal of Flowpoint Smooth Charcoal | 40 x 25kg Bags | Free Delivery
Rapid-Set Flowable Paving Grout for Porcelain, Granite Setts & Darker Natural Stone — Joints from 3mm — 40 Bags with Free Standard Delivery
UltraScape Flowpoint Smooth Charcoal is one of the best rapid set flowable paving grouts on the market — combining the finer aggregate of Flowpoint Smooth (joints from just 3mm) with a bold charcoal tone ideal for charcoal or grey porcelain, granite setts, slate and darker natural stones. This 40-bag part pallet deal includes free standard delivery and suits larger domestic projects and smaller commercial schemes. Need a full pallet? Our 56-bag full pallet also includes free standard delivery.
BS 7533 compliant, sets in 15 minutes at 20°C, joints from 3–50mm wide and 20–200mm deep, open to vehicles in 4 hours, 49.6N/mm² compressive strength, supplied in 25kg showerproof bags — Flowpoint Smooth Charcoal is a professional-strength flowable paving grout for porcelain, granite setts and tight-jointed darker natural stone.
We're a small, family-run business — I'm Cleo, the owner, with over 25 years in the construction industry working with businesses including Tarmac and Instarmac. Flowpoint Smooth Charcoal is a firm favourite for contractors working with porcelain and granite setts — the finer aggregate flows cleanly into tight joints, and the charcoal tone gives a crisp, contemporary finish.
If you're jointing charcoal or grey porcelain, granite setts, slate or darker natural stone — and particularly if your joints are narrower than 5mm — Flowpoint Smooth Charcoal is the product we'd confidently recommend. With darker limestones, apply a temporary pre-sealer such as Tile Rite Patio Prep before grouting. Unsure? Read our black limestone guide or give us a call.
UltraScape Flowpoint Smooth Charcoal is a fast-curing, flowable, cement-based paving grout with a finer aggregate finish, designed for joints from just 3mm. Mixed with water on site, poured across the paving surface and worked into joints with a neoprene squeegee, it sets to leave strong, durable, weed-resistant, void-free joints.
What Do Industry Experts Say About Flowpoint?
Flowpoint Smooth has been trusted on demanding projects for over 20 years. We asked Gareth Wilson, one of the UK's most respected hard landscaping experts, for his view.
Gareth has 30 years in the landscaping trade, 30 Royal Horticultural Show (RHS) awards for show garden construction, and now works as an expert witness in hard landscaping:
GARETH WILSON — Hard Landscaping Expert & RHS Award Winner
"Some landscapers are stuck in their ways and they don't like change. Their attitude is, 'I've been doing this for 20 years… Why should I change now?' And some are quite rightly scared when they consider pouring Flowpoint onto their slabs — at the end of the day, you are pouring a cementitious slurry directly onto the pavers. It goes against everything that you've been taught. But Flowpoint has been developed so it doesn't stick to the paving."In addition to its British Standard rating and the strength of the product, it's also the speed at which you can install it. If you're going to be on your hands and knees with a trowel and a three-to-one mortar mix, it will take you about five times as long to install, compared with using Flowpoint. Flowpoint is just so easy and quick to install that it makes you money. It's a well-priced product and, in my view, a landscaper's friend. Ultimately, it means less time on the job and more profit in your pocket."
Approved for Use on the London Underground & Overground
Flowpoint Smooth is approved for use on the London Underground and London Overground and is NBS Source registered — making it straightforward to specify on commercial and public realm projects.
Common Flowpoint Myths — Busted
| Myth | The Truth |
|---|---|
| Myth #1: Flowpoint is a new product | Flowpoint has been in use for over 25 years. Flowpoint Smooth itself has been in use for over 20 years. |
| Myth #2: You need specialist equipment | A paddle mixer and a long-handled neoprene squeegee are all you need beyond standard paving tools. |
| Myth #3: It's only for experienced contractors | Straightforward once you've seen it done. Watch a demonstration, follow the instructions, and do a trial area first. |
| Myth #4: Flowpoint sticks permanently to pavers | Keep the surface damp and time your work around the weather. In warm conditions, work during cooler parts of the day. |
| Myth #5: It causes cracking and low spots | Cracking typically happens when grout is washed off too early. Use the thumb test — if the joint still feels soft, wait longer. |
| Myth #6: It works with every stone type | Flowpoint Smooth works with most paving materials. The exception is black limestone without a temporary pre-sealer, which risks oxidisation. |
| Myth #7: Flowpoint causes efflorescence | Efflorescence is not a product fault — usually caused by insufficient bed drying time, excess water in the mix, or pressure-washing too early. |
| Myth #8: The paving must be kept soaking wet | Damp, not saturated. Remove standing water before grouting, then mist the surface throughout. |
| Myth #9: Slabs must cure for 28 days first | The key is a solid, set, dry bed — not a fixed number of days. The manufacturer recommends 21–28 days, but contractors often grout sooner when conditions allow. |
Flowpoint Smooth — Key Specification
- This deal: 40 x 25kg showerproof bags with free standard delivery. Need a full pallet? See our 56-bag full pallet.
- How to identify your grade on delivery: Flowpoint Smooth bags are orange and blue. Standard is black and orange; ECO is orange and green; Fine comes in tubs. The specific colour (Natural Grey or Charcoal) is printed on the white strip on the side of the bag.
- Colours: Charcoal (this deal) & Natural Grey (40-bag deal)
- Set time: 15 minutes at 20°C
- Open to foot traffic: 1 hour
- Open to vehicular traffic: 4 hours
- Classification: BS 7533
- Compressive strength: 49.6N/mm²
- Exceptional bond strength
- Shrinkage compensated
- Approved for use on the London Underground and Overground
- NBS Source registered
- Joint width: 3–50mm | Depth: 20–200mm
- Lasts up to 40 years without re-grouting
- Suitable for use in light rain
- Shelf life: 8 months (unopened, correct storage)
Suitable Paving Types
- Charcoal or grey porcelain (joints from 3mm)
- Granite setts
- Slate
- Darker sandstone and Indian Stone
- Yorkstone
- Clay pavers
- Concrete flags
- Limestone (use temporary pre-sealer for darker stones)
Flowpoint Grades & Colours — Full Range
| Grade | Colours | Joint Width | Joint Depth |
|---|---|---|---|
| Flowpoint Standard | Natural Grey & Charcoal | 5–50mm | 20–200mm |
| Flowpoint Premium Standard | Stone Grey, Limestone & Yorkstone | 5–50mm | 20–200mm |
| Flowpoint ECO | Natural Grey & Charcoal | 5–50mm | 20–200mm |
| Flowpoint Smooth | Natural Grey & Charcoal | 3–50mm | 20–200mm |
| Flowpoint Premium Smooth | Stone Grey, Limestone & Yorkstone | 3–50mm | 20–200mm |
| Flowpoint Fine | Natural Grey & Charcoal | 2–50mm | 20–200mm |
| Porcelpoint | Stone Grey & Limestone | 2–50mm | 20–200mm |
Approximate Coverage Guide (per 25kg bag)
- Natural Stone Mixed Packs: approx. 12–20m² per bag
- Granite Setts: approx. 1.5–2m² per bag
Use the Flowpoint Calculator on this page for an accurate estimate based on your joint size and paving area.
Frequently Asked Questions — UltraScape Flowpoint Smooth Charcoal (40 Bags)
I'm Cleo, owner of The Paving Experts, with over 25 years in the construction industry working with businesses including Tarmac and Instarmac. I work alongside a small team of incredibly knowledgeable and caring individuals who share the same passion for getting it right. The FAQ answers below come from the questions we're asked every single day.
1. What is UltraScape Flowpoint Smooth?
UltraScape Flowpoint Smooth is a rapid-set, flowable paving grout designed specifically for smooth paving stones and slabs. It produces a seamless, void-free joint that conforms to BS 7533. Pre-mixed in 25kg showerproof bags, it requires only the addition of water on site.
2. What is Flowpoint Smooth used for?
From domestic patios and driveways to town centre pedestrian schemes, pathways and carriageways. Suitable for natural stone, concrete flags and clay pavers, and particularly well suited to smooth or polished surfaces where a seamless, void-free finish is required.
3. How is Flowpoint Smooth different from Flowpoint Standard?
Flowpoint Smooth handles joints from 3mm — two millimetres tighter than Standard (5mm minimum). Its high fluid consistency produces a seamless finish particularly suited to smooth or polished surfaces. Compressive strength, water ratio and trafficking times are identical to Standard.
4. Why choose Charcoal over Natural Grey?
Charcoal creates a bolder, more defined joint that works particularly well with charcoal or grey porcelain, granite setts, slate and darker natural stones. It gives a contemporary, high-contrast finish. Unsure? Send us a photo and we'll advise.
5. What joint widths can Flowpoint Smooth be used for?
3mm to 50mm wide and 20mm to 200mm deep. For joints narrower than 3mm, consider Flowpoint Fine or Porcelpoint (both from 2mm). Give us a call if you're unsure.
6. What is the set time for Flowpoint Smooth?
15 minutes at 20°C. Colder conditions extend the set, warmer ones shorten it. Always use the thumb test before cleaning down.
7. How long before you can walk on Flowpoint Smooth?
Light foot traffic after approximately 1 hour. Allow a little longer in colder conditions.
8. How long before vehicles can drive over Flowpoint Smooth?
Approximately 4 hours. Ideal for driveways and schemes where the surface needs to return to use quickly.
9. Is Flowpoint Smooth BS 7533 compliant?
Yes — conforms to and exceeds BS 7533. NBS Source registered and approved for use on the London Underground and Overground.
10. Can Flowpoint Smooth Charcoal be used on porcelain paving?
Yes — particularly well suited to charcoal or grey porcelain where joints are 3mm or wider. Strongly recommend a temporary pre-sealer such as Tile Rite Patio Prep to prevent grout haze on polished surfaces.
11. Can Flowpoint Smooth Charcoal be used on natural stone paving?
Yes — granite setts, slate, darker sandstone, Indian Stone and Yorkstone. Always carry out a small trial first. For darker limestones, apply Tile Rite Patio Prep to prevent oxidisation.
12. Can Flowpoint Smooth be used on concrete paving?
Yes — suitable for concrete flags. Creates a strong, non-permeable, weed-resistant joint.
13. Can Flowpoint Smooth be used on clay pavers?
Yes — ensure the paving is thoroughly pre-soaked before application on any absorbent surface.
14. Is Flowpoint Smooth suitable for driveways and high-traffic areas?
Yes — with 49.6N/mm² compressive strength and vehicular trafficking possible after 4 hours, well suited to driveways and carriageway schemes.
15. Is Flowpoint Smooth suitable for large paving areas?
Yes — its flowable method is far faster than hand-pointing. Need a full pallet? Our 56-bag full pallet includes free delivery.
16. How do you apply Flowpoint Smooth Charcoal?
Pre-soak the paving and remove all ponded water. Add 4.25 litres of clean water per 25kg bag, mix for 3–5 minutes. Pour and work into joints with a neoprene squeegee. Keep the surface misted. Once initial set is reached, clean down with a brush and clean water. Only mix what you can place in approximately 4 minutes.
17. How much water do you add to a 25kg bag of Flowpoint Smooth?
Exactly 4.25 litres of clean water per bag. Never add more water or remix once the grout has started to set.
18. Is Flowpoint Smooth easy to mix?
Yes — pre-mixed dry-pack. Add water, mix 3–5 minutes with a slow-speed drill and paddle mixer. No specialist equipment required.
19. What colours does Flowpoint Smooth come in?
Charcoal (this deal) and Natural Grey (40-bag deal here). For Stone Grey, Limestone and Yorkstone, see Flowpoint Premium Smooth.
20. Can Flowpoint Smooth Charcoal be used on black limestone?
Yes, with the right preparation. Apply Tile Rite Patio Prep before grouting to prevent oxidisation. Call us for advice on your specific stone.
21. Can Flowpoint Smooth be used in the rain?
Yes — in light rain. Ensure joints are clear of ponded water. Do not apply during heavy rain or when frost is forecast within 24 hours.
22. Is Flowpoint Smooth permeable?
No — non-permeable cementitious grout. Must be used on a solid, non-permeable bed. Contact us if you need a permeable solution.
23. Do I need to pre-seal my slabs before using Flowpoint Smooth?
With a temporary pre-sealer: do not pre-soak — the sealer replaces this step.
Without a sealer: thoroughly wet the paving, then remove all standing water. The surface should be damp, not waterlogged.
24. What is the shelf life of Flowpoint Smooth?
8 months from date of manufacture, printed on the white strip on the side of each bag. Store in a cool, dry, frost-free environment, clear of the ground.
25. How long does Flowpoint Smooth last?
When applied correctly, Flowpoint Smooth Charcoal can last up to 40 years without the need to re-grout.
26. How much Flowpoint Smooth do I need?
40 bags covers approximately 480–640m² for natural stone mixed packs, or around 60–80m² for granite setts. Use the Flowpoint Calculator on this page for a precise estimate, or call us.
27. How do I tell the Flowpoint grades apart on delivery?
The bag colour tells you the grade at a glance. Flowpoint Smooth bags are orange and blue. Standard is black and orange; ECO is orange and green; Fine comes in tubs. The specific colour variant (Natural Grey or Charcoal) is printed on the white strip on the side of the bag.
Watch the video...
Please note: The videos below show Flowpoint Fine being applied. The mixing and application principles are identical for Flowpoint Smooth — the only difference is the water ratio. Flowpoint Fine and Porcelpoint require 3.4 litres per 20kg bucket; Flowpoint Standard, Smooth, ECO and Premium require 4.25 litres per 25kg bag.
Want a full pallet?
View our 56-bag full pallet — includes free standard delivery.
Need a paving primer & bedding mortar?
We recommend the full UltraScape BS 7533 Mortar Paving System — including rapid-strength fine bedding concrete EcoBed, priming slurry Pro-Prime, and flowable jointing grout Flowpoint Smooth.
Questions about Flowpoint Smooth Charcoal, coverage for your project, or which grade is right for your job? Get in touch or call us on 0330 122 1025 — we're a small team but we know our products inside out and we're always happy to help.
Flowpoint Smooth Charcoal — Full Technical Information
Product Overview
UltraScape Flowpoint Smooth Charcoal is a rapid-setting, flowable, cement-based paving grout with a finer aggregate finish for external use. Joints from just 3mm. Conforms to BS 7533. Approved for use on the London Underground and London Overground. NBS Source registered. Supplied in 25kg showerproof bags.
Performance Data
| Property | Value |
|---|---|
| Classification | BS 7533 |
| Compressive strength | 49.6N/mm² |
| Bond strength | Exceptional |
| Shrinkage | Shrinkage compensated |
| Initial set | 15 minutes at 20°C |
| Open to foot traffic | 1 hour |
| Open to vehicular traffic | 4 hours |
| Expected service life | Up to 40 years |
| Permeability | Non-permeable (impermeable bed required) |
| Weather resistance | Can be applied in light rain |
| Frost resistance | Do not apply below 3°C or if frost expected within 24 hours |
Application Data
| Property | Value |
|---|---|
| Water requirement | 4.25 litres per 25kg bag |
| Mixing time | 3–5 minutes |
| Working time after mixing | Approx. 4 minutes — mix one bag at a time |
| Joint width | 3–50mm |
| Joint depth | 20–200mm (single application) |
| Supply format | 25kg showerproof bags (pre-mixed dry-pack — just add water) |
| Colours available | Charcoal & Natural Grey |
Coverage Guide (approximate, per 25kg bag)
| Paving Type | Approximate Coverage |
|---|---|
| Porcelain Paving (600×900, 5×20mm joints) | approx. 30m² |
| Natural Stone (mixed pack) | 12–20m² |
| Granite Setts | 1.5–2m² |
Approvals & Certifications
- Conforms to BS 7533
- Approved for use on the London Underground and London Overground
- NBS Source registered
- Part of the Flowpoint range — in use for over 25 years worldwide
Storage & Shelf Life
- Shelf life: 8 months from date of manufacture (printed on the white strip on the side of the bag)
- Store in a cool, dry, frost-free area, clear of the ground
- Using after the declared storage period may increase the risk of an allergic reaction
Health & Safety
- Contains cement — wear PPE including gloves and eye protection
- Wet cement can cause serious skin burns
- Wash hands and exposed skin thoroughly after use
- Keep out of reach of children
- Full SDS available on request or from the UltraScape website
For the full technical datasheet, download the PDF here. For project-specific advice, get in touch or call us on 0330 122 1025.
How to Mix & Apply UltraScape Flowpoint Smooth Paving Grout
Step 1 — Preparation
Without a temporary pre-sealer (standard method):
- Ensure joints are clean and free from debris, dust and loose material.
- Thoroughly pre-soak the paving surface and joints — the paving must be properly wet before you begin.
- Remove all standing or ponded water from the surface and joints — a leaf blower is ideal. The paving should be damp, not waterlogged.
- Keep the surface moist throughout application by misting with a soft spray of water.
With a temporary pre-grout sealer (e.g. Tile Rite Patio Prep or Nexus ProJoint Pre-Grout):
- Apply the temporary sealer and allow to dry per product instructions.
- Do not pre-soak the paving. The sealer acts as the protective barrier — water not required until clean-down.
- Remove standing water from joints with a leaf blower before grouting.
- Always carry out a small trial area first.
Step 2 — Mixing
- Add 4.25 litres of clean water per 25kg bag into a clean vessel.
- Add Flowpoint Smooth powder to the water and mix for 3–5 minutes until smooth, lump-free and pourable. Use a slow-speed drill and paddle mixer.
- Only mix what you can apply in approximately 4 minutes.
- Never remix or add extra water once mixed.
Step 3 — Application
- Pour the mixed grout onto the paving surface.
- Using a neoprene squeegee, force the mortar into the joints, working methodically. Top up any joints where mortar has slumped.
- Remove as much excess mortar from the surface as you go.
- If not using a pre-sealer, keep the surface constantly misted throughout application.
- Once initial set is reached, clean down thoroughly with a brush and copious clean water. No mortar must remain on the surface.
- Wash all tools frequently.
Step 4 — Trafficking
- Foot traffic: after 1 hour (at 20°C)
- Vehicular traffic: after 4 hours (at 20°C)
- Cool temperatures retard set; warm temperatures accelerate it. Avoid applying in direct sunlight or during frost.
Technical Specification
| Property | Value |
|---|---|
| Water requirement | 4.25 litres per 25kg bag |
| Mixing time | 3–5 minutes |
| Working time after mixing | Approx. 4 minutes |
| Initial set | 15 minutes at 20°C |
| Open to foot traffic | 1 hour |
| Open to vehicular traffic | 4 hours |
| Joint width | 3–50mm |
| Joint depth | 20–200mm (single application) |
Important Precautions
- Wear appropriate PPE — avoid skin and eye contact. Wet cement can cause serious burns.
- Never remix or add extra water once mixed.
- Do not apply below 3°C or if frost is expected within 24 hours.
- Do not apply in direct sunlight.
- Store in a cool, dry, frost-free area. Shelf life: 8 months from date of manufacture.
Delivery & Returns Info
Our delivery charges are calculated based on the size and weight of your order. When you add items to your basket, the delivery charges are displayed. Small orders are distributed via courier; larger orders via Pallet Network. Collection is available from our Tamworth depot by request (contact us first to arrange on 0330 122 1025).
Please note, there is a slight surcharge for areas that are outside of our locality, charges calculated at checkout.
| Weight and size | Next Working Day* Order before 1PM (excl. VAT) |
Standard 3-5 Working Day (excl. VAT) |
|---|---|---|
| 0-13KG (1 small bag/tub) |
£14.00 | £9.00 |
| 13.01-25KG (1 large bag/tub) |
£16.00 | £10.00 |
| 25.01-50KG (2 bags/tubs) |
£26.00 | £19.00 |
| 50.01-75KG (3 bags/tubs) |
£36.00 | £28.00 |
| 75.01-100KG (4-5 bags/tubs) |
£46.00 | £37.00 |
| 100.01-249KG (6-9 bags/tubs) |
£60.00 | £45.00 |
| 249.01-750KG (10 bags plus) |
£68.00 | £48.00 |
| 750.01KG plus (30 bags plus) |
£75.00 | £55.00 |
| Full Pallets (56 bags/52 tubs) |
£88.00 | Free of charge |
| Next Working Day delivery (Premium 1-2 Working Day Service) | +avg. £5-10 Extra. Click here for prices |
|---|---|
| Scotland Delivery Service (Deliveries into some parts of Scotland can take 8-10 working days) | Click here for prices |
| Local Delivery & Click & Collect: | Email: orders@thepavingexperts.co.uk |
Delivery Information
- Prices apply to mainland England and Wales. Scottish delivery slight surcharge.
- Orders are packed and dispatched Monday–Friday (excluding weekends & public holidays).
Next Working Day Delivery
- Order before 1PM → same-day dispatch.
- Order after 1PM or on weekends/bank holidays → next working day dispatch.
- You'll receive tracking updates via email/SMS if you provide your details.
Delivery Examples
- Mon before 1PM → Packed Mon, delivered Tue.
- Mon after 1PM → Packed Tues delivered Wed.
- Fri before 1PM → Packed Fri, delivered Mon.
- Fri after 1PM/weekend → Packed Mon, delivered Tues (or Wed after a bank holiday).
- Standard Service: 3–5 working days.
Notes
- Occasional delays due to manufacturing, supply, or courier issues may happen, but we'll keep you informed.
Returns, cancel up to 14 days from date of delivery. Product to be returned in the same condition & packaging. No returns for cementitious & perishable products. You are responsible for the cost of returning goods to The Paving Experts, 20% admin restock fee applies. Need further info, click here.
For further detailed delivery information click here →
Part Pallet Deal of Flowpoint Smooth Charcoal | 40 x 25kg Bags | Free Delivery
Rapid-Set Flowable Paving Grout for Porcelain, Granite Setts & Darker Natural Stone — Joints from 3mm — 40 Bags with Free Standard Delivery
UltraScape Flowpoint Smooth Charcoal is one of the best rapid set flowable paving grouts on the market — combining the finer aggregate of Flowpoint Smooth (joints from just 3mm) with a bold charcoal tone ideal for charcoal or grey porcelain, granite setts, slate and darker natural stones. This 40-bag part pallet deal includes free standard delivery and suits larger domestic projects and smaller commercial schemes. Need a full pallet? Our 56-bag full pallet also includes free standard delivery.
BS 7533 compliant, sets in 15 minutes at 20°C, joints from 3–50mm wide and 20–200mm deep, open to vehicles in 4 hours, 49.6N/mm² compressive strength, supplied in 25kg showerproof bags — Flowpoint Smooth Charcoal is a professional-strength flowable paving grout for porcelain, granite setts and tight-jointed darker natural stone.
We're a small, family-run business — I'm Cleo, the owner, with over 25 years in the construction industry working with businesses including Tarmac and Instarmac. Flowpoint Smooth Charcoal is a firm favourite for contractors working with porcelain and granite setts — the finer aggregate flows cleanly into tight joints, and the charcoal tone gives a crisp, contemporary finish.
If you're jointing charcoal or grey porcelain, granite setts, slate or darker natural stone — and particularly if your joints are narrower than 5mm — Flowpoint Smooth Charcoal is the product we'd confidently recommend. With darker limestones, apply a temporary pre-sealer such as Tile Rite Patio Prep before grouting. Unsure? Read our black limestone guide or give us a call.
UltraScape Flowpoint Smooth Charcoal is a fast-curing, flowable, cement-based paving grout with a finer aggregate finish, designed for joints from just 3mm. Mixed with water on site, poured across the paving surface and worked into joints with a neoprene squeegee, it sets to leave strong, durable, weed-resistant, void-free joints.
What Do Industry Experts Say About Flowpoint?
Flowpoint Smooth has been trusted on demanding projects for over 20 years. We asked Gareth Wilson, one of the UK's most respected hard landscaping experts, for his view.
Gareth has 30 years in the landscaping trade, 30 Royal Horticultural Show (RHS) awards for show garden construction, and now works as an expert witness in hard landscaping:
GARETH WILSON — Hard Landscaping Expert & RHS Award Winner
"Some landscapers are stuck in their ways and they don't like change. Their attitude is, 'I've been doing this for 20 years… Why should I change now?' And some are quite rightly scared when they consider pouring Flowpoint onto their slabs — at the end of the day, you are pouring a cementitious slurry directly onto the pavers. It goes against everything that you've been taught. But Flowpoint has been developed so it doesn't stick to the paving."In addition to its British Standard rating and the strength of the product, it's also the speed at which you can install it. If you're going to be on your hands and knees with a trowel and a three-to-one mortar mix, it will take you about five times as long to install, compared with using Flowpoint. Flowpoint is just so easy and quick to install that it makes you money. It's a well-priced product and, in my view, a landscaper's friend. Ultimately, it means less time on the job and more profit in your pocket."
Approved for Use on the London Underground & Overground
Flowpoint Smooth is approved for use on the London Underground and London Overground and is NBS Source registered — making it straightforward to specify on commercial and public realm projects.
Common Flowpoint Myths — Busted
| Myth | The Truth |
|---|---|
| Myth #1: Flowpoint is a new product | Flowpoint has been in use for over 25 years. Flowpoint Smooth itself has been in use for over 20 years. |
| Myth #2: You need specialist equipment | A paddle mixer and a long-handled neoprene squeegee are all you need beyond standard paving tools. |
| Myth #3: It's only for experienced contractors | Straightforward once you've seen it done. Watch a demonstration, follow the instructions, and do a trial area first. |
| Myth #4: Flowpoint sticks permanently to pavers | Keep the surface damp and time your work around the weather. In warm conditions, work during cooler parts of the day. |
| Myth #5: It causes cracking and low spots | Cracking typically happens when grout is washed off too early. Use the thumb test — if the joint still feels soft, wait longer. |
| Myth #6: It works with every stone type | Flowpoint Smooth works with most paving materials. The exception is black limestone without a temporary pre-sealer, which risks oxidisation. |
| Myth #7: Flowpoint causes efflorescence | Efflorescence is not a product fault — usually caused by insufficient bed drying time, excess water in the mix, or pressure-washing too early. |
| Myth #8: The paving must be kept soaking wet | Damp, not saturated. Remove standing water before grouting, then mist the surface throughout. |
| Myth #9: Slabs must cure for 28 days first | The key is a solid, set, dry bed — not a fixed number of days. The manufacturer recommends 21–28 days, but contractors often grout sooner when conditions allow. |
Flowpoint Smooth — Key Specification
- This deal: 40 x 25kg showerproof bags with free standard delivery. Need a full pallet? See our 56-bag full pallet.
- How to identify your grade on delivery: Flowpoint Smooth bags are orange and blue. Standard is black and orange; ECO is orange and green; Fine comes in tubs. The specific colour (Natural Grey or Charcoal) is printed on the white strip on the side of the bag.
- Colours: Charcoal (this deal) & Natural Grey (40-bag deal)
- Set time: 15 minutes at 20°C
- Open to foot traffic: 1 hour
- Open to vehicular traffic: 4 hours
- Classification: BS 7533
- Compressive strength: 49.6N/mm²
- Exceptional bond strength
- Shrinkage compensated
- Approved for use on the London Underground and Overground
- NBS Source registered
- Joint width: 3–50mm | Depth: 20–200mm
- Lasts up to 40 years without re-grouting
- Suitable for use in light rain
- Shelf life: 8 months (unopened, correct storage)
Suitable Paving Types
- Charcoal or grey porcelain (joints from 3mm)
- Granite setts
- Slate
- Darker sandstone and Indian Stone
- Yorkstone
- Clay pavers
- Concrete flags
- Limestone (use temporary pre-sealer for darker stones)
Flowpoint Grades & Colours — Full Range
| Grade | Colours | Joint Width | Joint Depth |
|---|---|---|---|
| Flowpoint Standard | Natural Grey & Charcoal | 5–50mm | 20–200mm |
| Flowpoint Premium Standard | Stone Grey, Limestone & Yorkstone | 5–50mm | 20–200mm |
| Flowpoint ECO | Natural Grey & Charcoal | 5–50mm | 20–200mm |
| Flowpoint Smooth | Natural Grey & Charcoal | 3–50mm | 20–200mm |
| Flowpoint Premium Smooth | Stone Grey, Limestone & Yorkstone | 3–50mm | 20–200mm |
| Flowpoint Fine | Natural Grey & Charcoal | 2–50mm | 20–200mm |
| Porcelpoint | Stone Grey & Limestone | 2–50mm | 20–200mm |
Approximate Coverage Guide (per 25kg bag)
- Natural Stone Mixed Packs: approx. 12–20m² per bag
- Granite Setts: approx. 1.5–2m² per bag
Use the Flowpoint Calculator on this page for an accurate estimate based on your joint size and paving area.
Frequently Asked Questions — UltraScape Flowpoint Smooth Charcoal (40 Bags)
I'm Cleo, owner of The Paving Experts, with over 25 years in the construction industry working with businesses including Tarmac and Instarmac. I work alongside a small team of incredibly knowledgeable and caring individuals who share the same passion for getting it right. The FAQ answers below come from the questions we're asked every single day.
1. What is UltraScape Flowpoint Smooth?
UltraScape Flowpoint Smooth is a rapid-set, flowable paving grout designed specifically for smooth paving stones and slabs. It produces a seamless, void-free joint that conforms to BS 7533. Pre-mixed in 25kg showerproof bags, it requires only the addition of water on site.
2. What is Flowpoint Smooth used for?
From domestic patios and driveways to town centre pedestrian schemes, pathways and carriageways. Suitable for natural stone, concrete flags and clay pavers, and particularly well suited to smooth or polished surfaces where a seamless, void-free finish is required.
3. How is Flowpoint Smooth different from Flowpoint Standard?
Flowpoint Smooth handles joints from 3mm — two millimetres tighter than Standard (5mm minimum). Its high fluid consistency produces a seamless finish particularly suited to smooth or polished surfaces. Compressive strength, water ratio and trafficking times are identical to Standard.
4. Why choose Charcoal over Natural Grey?
Charcoal creates a bolder, more defined joint that works particularly well with charcoal or grey porcelain, granite setts, slate and darker natural stones. It gives a contemporary, high-contrast finish. Unsure? Send us a photo and we'll advise.
5. What joint widths can Flowpoint Smooth be used for?
3mm to 50mm wide and 20mm to 200mm deep. For joints narrower than 3mm, consider Flowpoint Fine or Porcelpoint (both from 2mm). Give us a call if you're unsure.
6. What is the set time for Flowpoint Smooth?
15 minutes at 20°C. Colder conditions extend the set, warmer ones shorten it. Always use the thumb test before cleaning down.
7. How long before you can walk on Flowpoint Smooth?
Light foot traffic after approximately 1 hour. Allow a little longer in colder conditions.
8. How long before vehicles can drive over Flowpoint Smooth?
Approximately 4 hours. Ideal for driveways and schemes where the surface needs to return to use quickly.
9. Is Flowpoint Smooth BS 7533 compliant?
Yes — conforms to and exceeds BS 7533. NBS Source registered and approved for use on the London Underground and Overground.
10. Can Flowpoint Smooth Charcoal be used on porcelain paving?
Yes — particularly well suited to charcoal or grey porcelain where joints are 3mm or wider. Strongly recommend a temporary pre-sealer such as Tile Rite Patio Prep to prevent grout haze on polished surfaces.
11. Can Flowpoint Smooth Charcoal be used on natural stone paving?
Yes — granite setts, slate, darker sandstone, Indian Stone and Yorkstone. Always carry out a small trial first. For darker limestones, apply Tile Rite Patio Prep to prevent oxidisation.
12. Can Flowpoint Smooth be used on concrete paving?
Yes — suitable for concrete flags. Creates a strong, non-permeable, weed-resistant joint.
13. Can Flowpoint Smooth be used on clay pavers?
Yes — ensure the paving is thoroughly pre-soaked before application on any absorbent surface.
14. Is Flowpoint Smooth suitable for driveways and high-traffic areas?
Yes — with 49.6N/mm² compressive strength and vehicular trafficking possible after 4 hours, well suited to driveways and carriageway schemes.
15. Is Flowpoint Smooth suitable for large paving areas?
Yes — its flowable method is far faster than hand-pointing. Need a full pallet? Our 56-bag full pallet includes free delivery.
16. How do you apply Flowpoint Smooth Charcoal?
Pre-soak the paving and remove all ponded water. Add 4.25 litres of clean water per 25kg bag, mix for 3–5 minutes. Pour and work into joints with a neoprene squeegee. Keep the surface misted. Once initial set is reached, clean down with a brush and clean water. Only mix what you can place in approximately 4 minutes.
17. How much water do you add to a 25kg bag of Flowpoint Smooth?
Exactly 4.25 litres of clean water per bag. Never add more water or remix once the grout has started to set.
18. Is Flowpoint Smooth easy to mix?
Yes — pre-mixed dry-pack. Add water, mix 3–5 minutes with a slow-speed drill and paddle mixer. No specialist equipment required.
19. What colours does Flowpoint Smooth come in?
Charcoal (this deal) and Natural Grey (40-bag deal here). For Stone Grey, Limestone and Yorkstone, see Flowpoint Premium Smooth.
20. Can Flowpoint Smooth Charcoal be used on black limestone?
Yes, with the right preparation. Apply Tile Rite Patio Prep before grouting to prevent oxidisation. Call us for advice on your specific stone.
21. Can Flowpoint Smooth be used in the rain?
Yes — in light rain. Ensure joints are clear of ponded water. Do not apply during heavy rain or when frost is forecast within 24 hours.
22. Is Flowpoint Smooth permeable?
No — non-permeable cementitious grout. Must be used on a solid, non-permeable bed. Contact us if you need a permeable solution.
23. Do I need to pre-seal my slabs before using Flowpoint Smooth?
With a temporary pre-sealer: do not pre-soak — the sealer replaces this step.
Without a sealer: thoroughly wet the paving, then remove all standing water. The surface should be damp, not waterlogged.
24. What is the shelf life of Flowpoint Smooth?
8 months from date of manufacture, printed on the white strip on the side of each bag. Store in a cool, dry, frost-free environment, clear of the ground.
25. How long does Flowpoint Smooth last?
When applied correctly, Flowpoint Smooth Charcoal can last up to 40 years without the need to re-grout.
26. How much Flowpoint Smooth do I need?
40 bags covers approximately 480–640m² for natural stone mixed packs, or around 60–80m² for granite setts. Use the Flowpoint Calculator on this page for a precise estimate, or call us.
27. How do I tell the Flowpoint grades apart on delivery?
The bag colour tells you the grade at a glance. Flowpoint Smooth bags are orange and blue. Standard is black and orange; ECO is orange and green; Fine comes in tubs. The specific colour variant (Natural Grey or Charcoal) is printed on the white strip on the side of the bag.
Watch the video...
Please note: The videos below show Flowpoint Fine being applied. The mixing and application principles are identical for Flowpoint Smooth — the only difference is the water ratio. Flowpoint Fine and Porcelpoint require 3.4 litres per 20kg bucket; Flowpoint Standard, Smooth, ECO and Premium require 4.25 litres per 25kg bag.
Want a full pallet?
View our 56-bag full pallet — includes free standard delivery.
Need a paving primer & bedding mortar?
We recommend the full UltraScape BS 7533 Mortar Paving System — including rapid-strength fine bedding concrete EcoBed, priming slurry Pro-Prime, and flowable jointing grout Flowpoint Smooth.
Questions about Flowpoint Smooth Charcoal, coverage for your project, or which grade is right for your job? Get in touch or call us on 0330 122 1025 — we're a small team but we know our products inside out and we're always happy to help.
Flowpoint Smooth Charcoal — Full Technical Information
Product Overview
UltraScape Flowpoint Smooth Charcoal is a rapid-setting, flowable, cement-based paving grout with a finer aggregate finish for external use. Joints from just 3mm. Conforms to BS 7533. Approved for use on the London Underground and London Overground. NBS Source registered. Supplied in 25kg showerproof bags.
Performance Data
| Property | Value |
|---|---|
| Classification | BS 7533 |
| Compressive strength | 49.6N/mm² |
| Bond strength | Exceptional |
| Shrinkage | Shrinkage compensated |
| Initial set | 15 minutes at 20°C |
| Open to foot traffic | 1 hour |
| Open to vehicular traffic | 4 hours |
| Expected service life | Up to 40 years |
| Permeability | Non-permeable (impermeable bed required) |
| Weather resistance | Can be applied in light rain |
| Frost resistance | Do not apply below 3°C or if frost expected within 24 hours |
Application Data
| Property | Value |
|---|---|
| Water requirement | 4.25 litres per 25kg bag |
| Mixing time | 3–5 minutes |
| Working time after mixing | Approx. 4 minutes — mix one bag at a time |
| Joint width | 3–50mm |
| Joint depth | 20–200mm (single application) |
| Supply format | 25kg showerproof bags (pre-mixed dry-pack — just add water) |
| Colours available | Charcoal & Natural Grey |
Coverage Guide (approximate, per 25kg bag)
| Paving Type | Approximate Coverage |
|---|---|
| Porcelain Paving (600×900, 5×20mm joints) | approx. 30m² |
| Natural Stone (mixed pack) | 12–20m² |
| Granite Setts | 1.5–2m² |
Approvals & Certifications
- Conforms to BS 7533
- Approved for use on the London Underground and London Overground
- NBS Source registered
- Part of the Flowpoint range — in use for over 25 years worldwide
Storage & Shelf Life
- Shelf life: 8 months from date of manufacture (printed on the white strip on the side of the bag)
- Store in a cool, dry, frost-free area, clear of the ground
- Using after the declared storage period may increase the risk of an allergic reaction
Health & Safety
- Contains cement — wear PPE including gloves and eye protection
- Wet cement can cause serious skin burns
- Wash hands and exposed skin thoroughly after use
- Keep out of reach of children
- Full SDS available on request or from the UltraScape website
For the full technical datasheet, download the PDF here. For project-specific advice, get in touch or call us on 0330 122 1025.
Delivery & Returns Info
Our delivery charges are calculated based on the size and weight of your order. When you add items to your basket, the delivery charges are displayed. Small orders are distributed via courier; larger orders via Pallet Network. Collection is available from our Tamworth depot by request (contact us first to arrange on 0330 122 1025).
Please note, there is a slight surcharge for areas that are outside of our locality, charges calculated at checkout.
| Weight and size | Next Working Day* Order before 1PM (excl. VAT) |
Standard 3-5 Working Day (excl. VAT) |
|---|---|---|
| 0-13KG (1 small bag/tub) |
£14.00 | £9.00 |
| 13.01-25KG (1 large bag/tub) |
£16.00 | £10.00 |
| 25.01-50KG (2 bags/tubs) |
£26.00 | £19.00 |
| 50.01-75KG (3 bags/tubs) |
£36.00 | £28.00 |
| 75.01-100KG (4-5 bags/tubs) |
£46.00 | £37.00 |
| 100.01-249KG (6-9 bags/tubs) |
£60.00 | £45.00 |
| 249.01-750KG (10 bags plus) |
£68.00 | £48.00 |
| 750.01KG plus (30 bags plus) |
£75.00 | £55.00 |
| Full Pallets (56 bags/52 tubs) |
£88.00 | Free of charge |
| Next Working Day delivery (Premium 1-2 Working Day Service) | +avg. £5-10 Extra. Click here for prices |
|---|---|
| Scotland Delivery Service (Deliveries into some parts of Scotland can take 8-10 working days) | Click here for prices |
| Local Delivery & Click & Collect: | Email: orders@thepavingexperts.co.uk |
Delivery Information
- Prices apply to mainland England and Wales. Scottish delivery slight surcharge.
- Orders are packed and dispatched Monday–Friday (excluding weekends & public holidays).
Next Working Day Delivery
- Order before 1PM → same-day dispatch.
- Order after 1PM or on weekends/bank holidays → next working day dispatch.
- You'll receive tracking updates via email/SMS if you provide your details.
Delivery Examples
- Mon before 1PM → Packed Mon, delivered Tue.
- Mon after 1PM → Packed Tues delivered Wed.
- Fri before 1PM → Packed Fri, delivered Mon.
- Fri after 1PM/weekend → Packed Mon, delivered Tues (or Wed after a bank holiday).
- Standard Service: 3–5 working days.
Notes
- Occasional delays due to manufacturing, supply, or courier issues may happen, but we'll keep you informed.
Returns, cancel up to 14 days from date of delivery. Product to be returned in the same condition & packaging. No returns for cementitious & perishable products. You are responsible for the cost of returning goods to The Paving Experts, 20% admin restock fee applies. Need further info, click here.
For further detailed delivery information click here →
How to Mix & Apply UltraScape Flowpoint Smooth Paving Grout
Step 1 — Preparation
Without a temporary pre-sealer (standard method):
- Ensure joints are clean and free from debris, dust and loose material.
- Thoroughly pre-soak the paving surface and joints — the paving must be properly wet before you begin.
- Remove all standing or ponded water from the surface and joints — a leaf blower is ideal. The paving should be damp, not waterlogged.
- Keep the surface moist throughout application by misting with a soft spray of water.
With a temporary pre-grout sealer (e.g. Tile Rite Patio Prep or Nexus ProJoint Pre-Grout):
- Apply the temporary sealer and allow to dry per product instructions.
- Do not pre-soak the paving. The sealer acts as the protective barrier — water not required until clean-down.
- Remove standing water from joints with a leaf blower before grouting.
- Always carry out a small trial area first.
Step 2 — Mixing
- Add 4.25 litres of clean water per 25kg bag into a clean vessel.
- Add Flowpoint Smooth powder to the water and mix for 3–5 minutes until smooth, lump-free and pourable. Use a slow-speed drill and paddle mixer.
- Only mix what you can apply in approximately 4 minutes.
- Never remix or add extra water once mixed.
Step 3 — Application
- Pour the mixed grout onto the paving surface.
- Using a neoprene squeegee, force the mortar into the joints, working methodically. Top up any joints where mortar has slumped.
- Remove as much excess mortar from the surface as you go.
- If not using a pre-sealer, keep the surface constantly misted throughout application.
- Once initial set is reached, clean down thoroughly with a brush and copious clean water. No mortar must remain on the surface.
- Wash all tools frequently.
Step 4 — Trafficking
- Foot traffic: after 1 hour (at 20°C)
- Vehicular traffic: after 4 hours (at 20°C)
- Cool temperatures retard set; warm temperatures accelerate it. Avoid applying in direct sunlight or during frost.
Technical Specification
| Property | Value |
|---|---|
| Water requirement | 4.25 litres per 25kg bag |
| Mixing time | 3–5 minutes |
| Working time after mixing | Approx. 4 minutes |
| Initial set | 15 minutes at 20°C |
| Open to foot traffic | 1 hour |
| Open to vehicular traffic | 4 hours |
| Joint width | 3–50mm |
| Joint depth | 20–200mm (single application) |
Important Precautions
- Wear appropriate PPE — avoid skin and eye contact. Wet cement can cause serious burns.
- Never remix or add extra water once mixed.
- Do not apply below 3°C or if frost is expected within 24 hours.
- Do not apply in direct sunlight.
- Store in a cool, dry, frost-free area. Shelf life: 8 months from date of manufacture.