Matt L.

Concrete worker.

cut cement board pieces with utility knife and level nearby

Waterproofing Over Cement Board: Liquid Membrane vs Sheet Membrane (Pros/Cons)

Introduction Liquid membrane vs sheet membrane are two options for waterproofing cement board, each creating a moisture barrier. Liquid membranes are painted or rolled on as a coating, while sheet membranes come as pre-formed material you apply over the surface. Check manufacturer instructions and local rules for curing times, substrate prep, and limits of use.

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