Structural Waterproofing

Structural waterproofing protects the fabric of the building itself, while a finish only hides it. Below-ground and water-retaining structures sit under constant hydrostatic pressure. Getting the design right is real engineering work, and BS 8102 sets the rules.

We design and fit layered systems. They mix barrier protection (Type A), integral protection (Type B) and drained protection (Type C) as the site needs. That back-up gives reliable, long-term results on the jobs that matter most. These include basement digs, retaining walls, vaults and commercial buildings.

We work for homeowners. We also work with builders, architects and engineers across London. For example, a new-build basement often needs a Type B concrete design backed by a Type C drained cavity. Because each structure differs, we survey first and specify second.

Smaller domestic jobs follow the same logic, although the scale is different. See our basement waterproofing page for homes, or book a free survey and written report for any structure.

Good design starts with good information. We look at the ground, the water level, how you use the space and the structure itself. As a result, the system we specify fits both the risk and the budget. We then record each detail in a clear drawing or report.

Site work needs the same care. We keep it simple. Joints, pipe entries and corners are where most leaks start. We check each one. For this reason, we check them before we cover them up. Finally, we hand over a written guarantee for the system.