Type A
Barrier protection
Cementitious slurries and spray applied membranes, forming a continuous barrier against the structure. Suitable where the structure is sound and the head of water is modest and well understood.
Hand & spray applied
Areas we cover · KT17, KT18, KT19
Basement waterproofing in Epsom.
Epsom made its name on its springs, and the geology that produced them has not gone anywhere. Where the permeable Chalk meets overlying clay, water is forced to the surface along a spring line that runs through the town. Below-ground structures built across that junction need drained protection, not a barrier system.
Ground conditions
What sits beneath Epsom.
| Postcodes | KT17, KT18, KT19 |
|---|---|
| Geology | Chalk overlain by Thanet Sand and London Clay to the north |
| Groundwater | Spring line at the Chalk–clay junction — the original Epsom springs |
| Housing stock | Georgian and Victorian town houses, large Edwardian and inter-war homes |
The Georgian town houses around the centre often have fine brick-vaulted cellars. These convert beautifully, but the vaults must be surveyed for structural movement before any membrane goes up.
Epsom is one of the areas we cover across Surrey & the North Downs.
Specification
Choosing the right system for Epsom.
BS 8102 sets out three forms of protection. Which one suits a property in Epsom depends on the water head, the condition of the structure and what you intend to use the space for.
Type B
Structurally integral
Water-resistant concrete construction, with joints and service penetrations designed as part of the structure. Usually the route for new basements and underpinned extensions.
New build & underpinned structures
Type C
Drained protection
Cavity drain membrane, perimeter channel and a pumped discharge. It manages water instead of resisting it, and it remains maintainable — which is why it suits most conversions of existing cellars.
Maintainable · Grade 3 habitable
Nearby
We also work in these areas.
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Book a survey in Epsom.
Tell us what you're seeing and we'll tell you honestly whether it needs a full waterproofing system or something much simpler.