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 · N1, N5, N7
Basement waterproofing in Islington.
Islington is London Clay throughout, and its Georgian and early Victorian stock comes with something genuinely valuable: original brick-vaulted coal cellars and pavement vaults. These convert into exceptional spaces, but the brickwork is old, often lime-mortared, and needs assessing structurally before any waterproofing decision is made.
Ground conditions
What sits beneath Islington.
| Postcodes | N1, N5, N7 |
|---|---|
| Geology | London Clay |
| Groundwater | Moderate, with perched water in deep made ground |
| Housing stock | Georgian and early Victorian town houses, many with original vaults and coal cellars |
Pavement vaults extending under the highway need local authority consent and careful structural review. We handle that assessment as part of the survey rather than discovering it mid-project.
Islington is one of the areas we cover across North London.
Specification
Choosing the right system for Islington.
BS 8102 sets out three forms of protection. Which one suits a property in Islington 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.
Request a quote
Book a survey in Islington.
Tell us what you're seeing and we'll tell you honestly whether it needs a full waterproofing system or something much simpler.