Below-ground
Liquid Screed for Tanked Basements
Basements are wet-room chemistry. Cement-based screed only — anhydrite is off the table.
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Basement build-ups use a Type C cavity drain membrane with a sump-and-pump. Screed goes on top of the studded membrane, usually with wet UFH.
The chemistry has to be cement-based (Cemfloor) — anhydrite can't handle the residual moisture risk.
Basement screed build-up
- Type C studded membrane with drainage channel
- 100mm PIR insulation over the studs
- UFH manifold sited above finished slab
- 50–60mm Cemfloor over pipe
Residential liquid screed
- Level floors for extensions and self-builds
- Screed suitable for underfloor heating
- Build-up planned around your floor finish
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Covering Devon, Somerset and West Dorset
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Basement conversion?
Send the tanking spec. We'll pour the screed to match.