Basement waterproofing to BS 8102
We have a number of proven solutions, including Cavity Drain Membranes, Cementitious Tanking Membranes, and External Ground Damp Proof Membranes — each designed by our own qualified surveyors.
We have a number of proven solutions for basement waterproofing, including Cavity Drain Membranes, Cementitious Tanking Membranes, and External Ground Damp Proof Membranes. Every system is designed by Bensleys’ own qualified surveyors, and every installation follows British Standard BS 8102 — the standard designated as ‘the protection of structures against water from the ground’ — along with Property Care Association guidelines.
Treatment Areas
The right system depends on the structure.
Each has its place, and the right choice depends on wall construction, water pressure, and whether the space needs a sump and pump. Each system below has its own dedicated page.
Cavity Drain Membranes
A dimpled cavity membrane creates a drainage cavity behind the wall, collecting ingressing water and channelling it away — with…
Find out moreCementitious Tanking Membranes
A modified cement slurry or multi-coat render applied directly to the internal face, stopping moisture at the point of entry…
Find out moreExternal Ground Damp Proof Membrane
Installed with suitable drainage to the perimeter of new-build basements, or where ground levels are lowered around an existing one…
Find out moreBacked by long-term, underwritten guarantees
Every system we install is covered by Bensleys' standard guarantees, which can be underwritten by Guarantee Protection Insurance Ltd or the Triton User Group as required — giving councils, agents and homeowners alike a guarantee that outlasts the company that issued it.
Other Services
Beyond basement waterproofing
Damp
Wood boring insects, wet rot, dry rot, rising damp or condensation — we diagnose the true cause before we treat…
Find out moreGround Gas Protection
Protection against radon, methane, CO2 and hydrocarbons for new build and existing properties, to BR211, BR212 and BR414.
Find out moreStructural Solutions
Where movement or cracking points to something more serious, we use tried and tested methods including wall tie replacement, re-rendering…
Find out moreFrequently Asked Questions
Find clear answers for Basement Waterproofing.
Is basement or cellar waterproofing possible in an older property?
Wet basement or cellar? Let's design the right system.
Our own qualified surveyors will assess the structure and specify the system that actually fits it, not the one that's easiest to sell.