Basement & Cellar Tanking
Below-ground rooms are in constant contact with damp ground, so they need a deliberate waterproofing strategy. Done well, a damp cellar becomes a dry, usable space — storage, a utility room, a workshop or extra living space.
Two Proven Approaches
Cementitious Tanking
A multi-coat waterproof render/slurry bonded directly to the walls and floor, sealing the structure against water ingress. Ideal where a solid, plasterable finish is wanted.
Cavity-Drain Membrane
A studded membrane lines the walls and floor, channelling any water to a drainage point or sump and pump. A reliable, maintainable system, especially for conversions.
We recommend the right system — or combination — for your structure, water conditions and how you intend to use the room.
What’s Involved
- Survey & assessment — we establish the water conditions, the structure, and how the space will be used.
- Preparation — removing old finishes and failed tanking, preparing sound surfaces.
- Waterproofing — installing the tanking or membrane system to specification.
- Finishing — battening, boarding or plastering ready for your intended use.
Cellar conversions
Planning to convert a cellar into a habitable room? Waterproofing is the foundation everything else depends on. We'll make sure it's done to a standard you can build on with confidence.
Guarantees
Basement waterproofing is carried out with established, certified systems and backed by appropriate guarantees. We’ll explain exactly what’s covered before any work begins.
Book a Free Survey
Damp cellar or basement you’d like to put to use? Book a free survey → and we’ll advise on the best waterproofing approach.