Drybase Flex Membrane 1.2 m × 15 m is an advanced, low-profile waterproofing membrane designed to protect internal walls from damp and salt damage without the need for drilling or fixings. Crafted from flexible polypropylene and laminated with fleece on both sides, it delivers easy adhesion and seamlessly accepts plaster finishes.
This smart membrane offers a streamlined damp-proofing solution—eliminating the time-consuming processes of mechanical fixings and minimizing disturbance during renovation. Its slim profile keeps wall depth intact while offering durable protection against moisture ingress.
Key Benefits
Plug-free installation — avoids drilling or penetrating sensitive masonry
Durable waterproof layer — flexible yet robust against damp and salts
Plaster-ready surface — fleece coating ensures bonding with conventional plaster or skim finishes
Slim 1.5 mm profile — maximizes interior space without compromising protection
Rapid application — quick fixing helps accelerate project timelines
Common Applications
Internal lining of damp-solid walls in basements, cellars, or ground floors
Renovation scenarios where wall finish preservation is crucial
Damp-proofing older buildings with minimal interior disruption
Creating effective barriers against rising damp before applying plasterboard or finishes
Installation Overview
Inspect and prepare wall surfaces—remove loose renders, contaminants, and repair uneven areas.
Apply Drybase Flex Adhesive on a clean wall surface in manageable sections.
Press the membrane onto the adhesive, ensuring a tight fit and leaving a small gap (around 25 mm) at the floor junction.
Trim excess membrane and clean away adhesive within the working time.
After full curing, apply finishing plasters or render directly onto the fleece surface.
Why It’s a Smart Choice
Drybase Flex Membrane simplifies damp-proofing with a clean, efficient, and modern installation approach. Its flexible design adapts to building movements, and the fleece surface ensures reliable adhesion for finishing coats. Whether tackling full refurbishments or spot damp treatments, this membrane delivers strong protection without complexity.
 
A watertight low-profile sheet membrane for protection against dampness in walls without the need to drill and install plugs
 
Size: 1.2m x 15m
Can be applied to damp substrates
Accepts plaster finish directly
No need for plugs (no unnecessary penetration of membrane)
A watertight low-profile sheet membrane for protection against dampness in walls without the need to drill and install plugs. The membrane is a 1.5 mm thick flexible polypropylene sheet with a fleeced surface on both sides. The two fleeces ensure good adhesion to the wall by means of Drybase Flex Adhesive, as well as the direct application of plaster to the face.