{"product_id":"projoint-pre-grout-stone-porcelain-paving-sealer","title":"Nexus ProJoint Pre-Grout Stone \u0026 Porcelain Paving Sealer","description":"\u003ch2\u003e\u003cstrong\u003eNexus ProJoint Pre-Grout Sealer | Invisible Surface Protection Before Grouting Porcelain \u0026amp; Natural Stone Paving\u003c\/strong\u003e\u003c\/h2\u003e\n\n\u003cp\u003e\u003cem\u003eProJoint Pre-Grout is one of the best pre-grout sealers on the market — an excellent example of a product that does a quiet but critical job brilliantly. Applied before grouting, it creates an invisible barrier that lets jointing compounds release cleanly from the paving surface, dramatically reducing the risk of resin sheen, grout haze and staining. It also aids the workability of the jointing compound itself. It's a product our customers consistently come back to tell us they're delighted with: a small step that makes a big difference to the finished result.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eWater-based, invisible pre-grout treatment for porcelain, natural stone and concrete paving — suitable for indoor and outdoor use, all year round. Up to 30m² per litre on porcelain; up to 15m² per litre on natural stone. Apply 2 coats; ready for grouting in 30–60 minutes. Compatible with all ProJoint grouting products including \u003ca href=\"\/products\/nexus-projoint-rapidflow-brush-in-porcelain-paving-grout\"\u003eRapidFlow\u003c\/a\u003e and \u003ca href=\"\/products\/nexus-projoint-titan\"\u003eTITAN\u003c\/a\u003e.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eWe'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. I work alongside a team of incredibly knowledgeable and caring individuals, and between us we've seen a lot of grouting jobs go wrong because this step was skipped. Pre-Grout Sealer is the product we always recommend before any resin, epoxy or cementitious jointing compound — it's inexpensive insurance against an expensive and very visible problem.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eIf you're about to grout porcelain, natural stone or concrete paving — whether with ProJoint RapidFlow, TITAN, or any other ProJoint compound — Pre-Grout is the product we'd confidently apply first, every single time. Available in \u003cstrong\u003e1 litre bottles\u003c\/strong\u003e and \u003cstrong\u003e5 litre containers\u003c\/strong\u003e. \u003ca href=\"\/pages\/contact-us\"\u003eCall us\u003c\/a\u003e if you're unsure which size is right for your project.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Benefits\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrevents grout haze and resin sheen\u003c\/strong\u003e — creates an invisible barrier that lets compounds release cleanly from the surface\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional strength pre-grout treatment\u003c\/strong\u003e — suitable for all types of porcelain, natural stone and concrete paving\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAids workability\u003c\/strong\u003e — helps with the application of air cure, epoxy and cementitious grouts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompletely invisible\u003c\/strong\u003e — dries with no colour change to paving slabs whatsoever\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater-based and breathable\u003c\/strong\u003e — can be used all year round, safe for indoor and outdoor use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast turnaround\u003c\/strong\u003e — ready for grouting in just 30–60 minutes (weather dependent)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcellent coverage\u003c\/strong\u003e — up to 30m² per litre on porcelain; up to 15m² per litre on natural stone or concrete\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdeal for textured porcelain surfaces\u003c\/strong\u003e — where grout haze is hardest to remove\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible with all ProJoint jointing products\u003c\/strong\u003e — highly recommended before TITAN, RapidFlow and epoxy compounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual use\u003c\/strong\u003e — can also be applied post-grouting (once fully cured) to protect paving and aid stain removal\u003c\/li\u003e\n\u003cli\u003eAvailable in \u003cstrong\u003e1L bottles\u003c\/strong\u003e and \u003cstrong\u003e5L containers\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eTechnical Information\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eInvisible water-based pre-grout sealer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSuitable for\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePorcelain, natural stone, concrete — indoor and outdoor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eInvisible — no colour change to paving\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCoverage (porcelain)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 30m² per litre \/ up to 150m² per 5L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCoverage (natural stone \/ concrete)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 15m² per litre \/ up to 75m² per 5L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecommended coats\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 coats for maximum protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDry time between coats\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAllow first coat to fully dry before applying second\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReady for grouting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e30–60 minutes after second coat (weather dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFormula\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWater-based, breathable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1L bottles or 5L containers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible with\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAll ProJoint products — air cure, epoxy and cementitious grouts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003e\u003cstrong\u003ePreparation\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eEnsure the paving surface is sound, clean and free from dirt, dust and oil before application. For best results, apply onto a dry surface — allow at least two days after cleaning for all moisture to fully dissipate. The sealer can be applied to damp surfaces but performance will be slightly reduced. Apply when surface temperature allows for normal drying conditions.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eApplication Instructions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eShake or stir the container well before use.\u003c\/li\u003e\n\u003cli\u003eApply a complete, even first coat over the whole paving surface, removing any excess. Allow to dry fully before proceeding.\u003c\/li\u003e\n\u003cli\u003eApply a second even coat and leave to cure — 30 to 60 minutes in normal conditions (weather dependent). An extra coat may be needed on particularly porous or textured paving.\u003c\/li\u003e\n\u003cli\u003eOnce the sealer has dried, it is ready to accept foot traffic and your chosen jointing compound can be installed.\u003c\/li\u003e\n\u003cli\u003eFor additional temporary protection, a further coat can be applied immediately before grouting begins on highly textured surfaces.\u003c\/li\u003e\n\u003cli\u003eClean all tools and equipment with water after use.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Always test in a hidden area before full application. The sealer is designed to be invisible but may very slightly darken extremely light or highly porous surfaces. Do not discharge waste into drains or watercourses.\u003c\/p\u003e\n\u003cp\u003eFor a longer-lasting permanent seal once the Pre-Grout Sealer has faded, we recommend \u003ca href=\"\/products\/nexus-projoint-pro-820-eco-paving-sealer\"\u003eProJoint PRO-820 ECO Invisible Water-Based Sealer\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cem\u003eI'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.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy should I use Pre-Grout Sealer?\u003c\/strong\u003e\u003cbr\u003e\nThe sealer assists in preventing resin sheen and grout haze. It also helps with the workability of jointing compounds — including air cure, epoxy and cementitious grouts. Skipping this step is one of the most common causes of a disappointing finish after grouting.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow long until the sealer is cured and ready for grouting?\u003c\/strong\u003e\u003cbr\u003e\nAs soon as the sealer has dried — 30 to 60 minutes weather dependent — it is ready to accept foot traffic and your chosen jointing compound.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs the sealer water or solvent based?\u003c\/strong\u003e\u003cbr\u003e\nThis sealer uses a water-based formula, allowing it to be used all year round without the hazards associated with solvent-based products.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes the area need to be dry before application?\u003c\/strong\u003e\u003cbr\u003e\nFor best results, apply onto a dry surface. However, the sealer can be used if surfaces are damp — performance will be slightly reduced on very wet surfaces.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow many coats do I need to apply?\u003c\/strong\u003e\u003cbr\u003e\nWe recommend 2 coats for maximum protection. You must wait for the first coat to dry fully before applying the second. On highly textured or porous paving, an additional coat may be applied immediately before grouting.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is the coverage rate?\u003c\/strong\u003e\u003cbr\u003e\n1 litre covers up to 15m² on natural stone and up to 30m² on porcelain. A 5 litre container covers up to 75m² on stone and up to 150m² on porcelain.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWill it change the look of my paving?\u003c\/strong\u003e\u003cbr\u003e\nNo — it dries completely invisible with no change to colour or texture. We always recommend testing in a small hidden area first, particularly on very light or highly porous surfaces.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhich jointing products is it compatible with?\u003c\/strong\u003e\u003cbr\u003e\nAll ProJoint products — it is particularly recommended before \u003ca href=\"\/products\/nexus-projoint-rapidflow-brush-in-porcelain-paving-grout\"\u003eRapidFlow\u003c\/a\u003e, \u003ca href=\"\/products\/nexus-projoint-titan\"\u003eTITAN\u003c\/a\u003e, \u003ca href=\"\/products\/flowpoint-fine-rapid-set-external-paving-grout-natural-grey\"\u003eFlowpoint Natural Grey\u003c\/a\u003e, \u003ca href=\"\/products\/flowpoint-fine-rapid-set-external-paving-grout-charcoal\"\u003eFlowpoint Fine Natural Grey\u003c\/a\u003e, \u003ca href=\"\/products\/ultrascape-porcelpoint-flowable-porcelain-grout-limestone\"\u003ePorcelpoint\u003c\/a\u003e, \u003ca href=\"\/products\/larsen-streetscape-fjm\"\u003eLarsen FJM\u003c\/a\u003e, \u003ca href=\"\/products\/fuga-pave-flex-xp-grout-15kg-formally-fuga-pave-part-c\"\u003eFUGA-PAVE FLEX XP\u003c\/a\u003e and \u003ca href=\"\/products\/nexus-projoint-tilejam-10kg\"\u003eTileJam\u003c\/a\u003e. Also suitable for use before leading cementitious grouts.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan it be used after grouting too?\u003c\/strong\u003e\u003cbr\u003e\nYes — once grouting is complete and fully cured, a coat of Pre-Grout Sealer can be applied to protect the paving surface and aid future removal of stains and dirt from organic matter.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eNeed Some Help?\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e or call us on \u003cstrong\u003e0330 122 1025\u003c\/strong\u003e — we're always happy to help.\u003c\/p\u003e","brand":"Nexus","offers":[{"title":"PaveCare Pre-Grout 12 x 1Ltr Bottles","offer_id":56819455787343,"sku":"TPE-NEXPAVSTO368","price":154.99,"currency_code":"GBP","in_stock":true},{"title":"PaveCare Pre-Grout 5 Ltr Tub","offer_id":56819455820111,"sku":"TPE-NEXPAVSTODA5","price":48.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0934\/6039\/8415\/files\/ProJoint-Pre-Grout-Paving-Sealer-Combined-Image.jpg?v=1768398026","url":"https:\/\/thepavingexperts.co.uk\/products\/projoint-pre-grout-stone-porcelain-paving-sealer","provider":"The Paving Experts ","version":"1.0","type":"link"}