Protect and waterproof structural surfaces with Crommelin Membryl 15L, a premium water‑based, elastomeric waterproofing membrane engineered for long‑lasting outdoor performance. It forms a seamless liquid barrier that flexes with structural movement, resists environmental attack and helps prevent water ingress while preserving the substrate’s breathability.

Unlike typical bitumen or basic sealers, this membrane delivers high UV stability and anti‑carbonation protection, making it suitable for exposed concrete, walls and roof areas where durability matters. Plus, its strong adhesion means it usually doesn’t require a separate primer on most properly prepared surfaces.

Key Features:

• Water‑based elastomeric waterproofing membrane with long‑term UV stability for exterior use.

• Seamless membrane that prevents water and contaminants from penetrating.

• Permanently flexible to accommodate substrate movement and bridge fine cracks.

• Anti‑carbonation protection helps defend concrete from environmental deterioration.

• High tensile strength and adhesion — tough and resistant to impact and damage.

• Resists fungal and algal growth for cleaner surfaces in humid conditions.

• Available in decorative colour options for aesthetic flexibility.

Ideal For:

• Exterior concrete roofs and deck waterproofing.

• Brick, block and masonry walls exposed to weather.

• Internal walls and concrete structures requiring durable protection.

• Substrates like fibre cement, metal and prepared plywood where water resistance is needed.

Application & Performance:
Ensure the surface is clean, dry and free of contaminants before application. Then apply Membryl with a brush, roller or suitable spray equipment to build a continuous rubbery membrane. Its elastomeric properties help bridge small cracks and adapt to movement, while high adhesive strength minimises peeling. Drying and recoat times depend on temperature and humidity; always follow manufacturer recommendations for best results.

Important: Application Instructions and Installation Guide