Technical information

• Workability: 60 minutes
• Set time: 8 hours
• Open to traffic: 24 hours
• Depth: 10mm – 100mm
• Non-shrink
• Will not corrode or stain
• 70N/mm² compressive strength at 28 days
• Approved for use on the London Underground and Overground
• Size: 25kg bag

If you would like a copy of the technical data sheet or the safety data then please do let us know and we'll be happy to send these over to you.

How to mix HF High Flow Precision Grout

Mixing is best achieved in a clean forced action grout mixer or by a slow speed drill fitted with a paddle attachment. Larger quantities will require a high shear vane mixer. To achieve a flowable mix use up to 4.5 litres of water. A fluid mix will require up to 4.8 litres. Instructions:

1. Measure the amount of water into the mixer to provide the consistency required.
2. Slowly add the contents of a full bag of Ultracrete HF powder to the water.
3. Mix continuously for 5 minutes ensuring that a smooth even consistency is obtained.
4. It is essential that machine mixing capacity and labour available is adequate to enable the grouting operation to be carried out continuously. This may require the use of a holding tank with provision for gentle agitation, to maintain fluidity.