WestWood’s Wethan systems offer a premium solution for flame-free application. Utilising advanced polyurethane (PU) chemistry, Wethan is a one-component (1C) waterproofing system designed flat areas, upstands and edges with or without fleece reinforcement. This high-performance system delivers durability and flexibility, making it an ideal choice for long-term protection in demanding applications.

Wethan cures to form a seamless, highly elastic, and waterproof membrane. Tested and approved according to ETAG 005 as a Category 3 product, it ensures a minimum service life of 25 years. The system provides excellent crack-bridging capability for cracks up to 2mm and remains resilient in diverse conditions, offering resistance to roots, UV rays, and chemicals. Its water-vapor diffusion capacity adds another layer of efficiency, particularly for flat areas and surfaces exposed to fluctuating environmental factors.

With its ability to deliver robust performance without compromising flexibility, Wethan systems are an excellent choice for both new constructions and refurbishment projects.

Key advantages

Flame-free application for enhanced safety

Seamless and highly elastic membrane

ETAG 005 Category 3 certification (25+ years of service life)

Crack-bridging capability

Root-resistant

UV-stable and weather-resistant

High chemical and mechanical resistance

Suitable for flat area application, upstands, and edges