RUC Underfelt Foil Collar

Ensuring 100% water tightness around your window.

A key element in ensuring the tightness of a roof window is effective water resistance at the critical point where roof and window meet. The AXIS90 RUC underfelt foil collar, crafted from tear-resistant polystyrene and coated with a vapour-permeable polyurethane layer, provides exceptional water tightness while allowing for breathability. 

Designed to perform in the harshest conditions, it has been tested to withstand temperatures from -40°C to +80°C and endure even torrential rain. Pre-cut to fit the dimensions of the roof window, the RUC collar also helps to reduce installation time.

Enjoy additional peace of mind with our 2-year warranty.