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 · CR0, CR2, CR9
Basement waterproofing in Croydon.
Croydon sits where the Chalk of the North Downs meets the sands and clays of the London Basin, and that junction is exactly where water collects. Properties along the old Bourne watercourse see seasonal groundwater that can arrive suddenly after a wet winter and vanish by spring — which is why a survey taken in August can badly understate the problem.
Ground conditions
What sits beneath Croydon.
| Postcodes | CR0, CR2, CR9 |
|---|---|
| Geology | Thanet Sand and the Woolwich & Reading Beds over Chalk |
| Groundwater | Variable, with historic spring lines along the Bourne |
| Housing stock | Victorian and Edwardian terraces, 1930s semis, post-war blocks |
We are based on Heathhurst Road, a few minutes from central Croydon, so this is our home patch. We survey across CR0 and CR2 at short notice.
Croydon is one of the areas we cover across South London.
Specification
Choosing the right system for Croydon.
BS 8102 sets out three forms of protection. Which one suits a property in Croydon 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 Croydon.
Tell us what you're seeing and we'll tell you honestly whether it needs a full waterproofing system or something much simpler.