Waterproof cement

A traditional cementitious waterproofing solution


Traditional tanking relies on a layer of water resistant material being applied to the walls of an underground space. This tanking usually takes the form of waterproof cement.

Ordinary cement can absorb the equivalent of 60 litres of water in 30 minutes, and this speedy absorption is what can cause damp and leaky basements and cellars. This is why a waterproof alternative is needed to properly prevent water ingress.

How waterproof cement works

"Cementitious waterproofing mortar", "waterproofing slurry" or "waterproof concrete" are all common names for tanking waterproofing solutions - and they all work in the same way.

They function by blocking the porous capillary structure of the concrete surface, thereby avoiding any water ingress. Despite this, these systems still remain permeable to water vapour, meaning any trapped moisture can escape allowing the structure to 'breathe'.

This combination of water-tight structure and breathable surface allow tanking systems using waterproof cement to be both waterproof and damp proof

Waterproof cement regulations

For a cement to be classed “waterproof” it must fulfil criteria set out by the British Standards Institute, specifically BS 1881, part 122. Wise Basement Systems strictly adhere to basement waterproofing regulations as part of our commitment to best practice within our industry.

Find out more about Basement tanking and regulations

Click on the links below to find out more about basement tanking and the waterproofing regulations that categorise, and provide guidance for, any structural waterproofing below ground level:

More on Basement tanking

Find out more about traditional basement tanking systems and potential problems associated with this waterproofing solution.

Basement tanking

Waterproofing regulations

Find out more about the British Standards Institute's laws and regulations surrounding waterproofing systems.

BSI regulations

Speak to a waterproof cement specialist

Find a branch in your local area to speak to a waterproofing specialist or call 0808 256 4538. Our surveyors are trained to CSSW (Certified Surveyor of Structural Waterproofing) standards. Combine this expertise with our 10-year cellar repair guarantee and you can have complete peace of mind that we are the right contractor for your waterproofing needs.

Contact Wise Basement Systems

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