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Cavity Drainage Membrane

(10 products)

Cavity drainage membranes are the heart of a Type C waterproofing system. Instead of holding water back, the studded membrane lets it run behind the finish to a drainage channel and sump, leaving a dry, usable room.

Wall membranes include the 3mm HDPE studded membrane, the plaster-ready 8mm Meshed Membrane and the 8mm Membrane. The 20mm Stud Membrane handles high water ingress. Under floors, use the 1mm Slimline Membrane. Externally, the Geotextile Membrane relieves hydrostatic pressure.

Treat new concrete with Lime Inhibitor so free lime doesn't block the system. For a ready-made order, the Cavity Drainage Membrane Kit bundles membrane and accessories for 30m² of wall.
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