Installation Accessories

Installation Accessories

Our installation accessories have one use and an important one at that; to make installation that much easier, saving you time and stress.

A very useful component is the underfelt collar. Made out of a pleated material, the underfelt collar is supplied as one piece for around the window, corners and frames, which ensures a fast connection between your roof window and roofing felt/breather membrane, saving you time on installation.

The insulation collar by VELUX also contains the underfelt collar and has been designed to reduce heat loss, which is achieved by eliminating thermal bridges between your roof window and roof structure and because of its click fittings, you can benefit from an easy yet accurate installation.