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Weber Saint-Gobain - Official website of the company


Please see below for a list of Weber's most frequently asked questions. We hope that you find this information helpful.

What are the constraints of working in cold and hot weather?

Minimum: Any material that requires water should not be used where there is a possibility of the water freezing before initial hydration of the cement has taken place. BS 8000 states that 5°C is the minimum temperature at which cementitious materials should be used.

Maximum: The maximum temperature at which Weber recommends the use of its products is 35°C. If in doubt please email technical(at)  

The actual minimum and maximum temperature at which each of our products can be applied are detailed in the datasheets at the Download Centre.

How far does a bag of 'x' go?

Coverage of materials are on the relevant data sheet found at the Download Centre.

For most products the coverage is quoted in litres - as a guide: 1 litre will cover 1m² at 1mm thick.

Example - Five Star Grout when mixed with maximum water addition will yield 14 litres of material.  If the thickness is 14mm then one bag will cover 1m².

All coverage rates should be checked to ensure that a) enough material is ordered for any given project or b) too much material is not ordered.

Does your product comply with the specification?

Where necessary our products have been designed and formulated to meet the relevant specification.  For more information view our Product Selector Guide Weber technical services can help with the selection of the correct material to comply with your specification.

What is the minimum/maximum thickness your product can be applied?

Minimum and maximum thickness of application is detailed on the relevant data sheets in the Download Centre. For special requirements please email technical(at)