Velux Underfelt Collar BFX1000 UK08 134 x 140cm Category_Default Category/Fixings/Screws/SPAX/Spax Decking Screws whilst only adding minimally to

whilst only adding minimally to the overall mass of the structure

extensively researched and tested materials that boost your homes energy efficiency and help lower your energy bills

Officially licensed for the storage of heating oil by OFTEC - the Oil Firing Technical Association

the trim is designed to withstand various environmental conditions

High-quality materials for robust construction

Velux Underfelt Collar BFX1000 UK08 134 x 140cm Category_Default Category/Fixings/Screws/SPAX/Spax Decking Screws whilst only adding minimally tohe BFX Underfelt Collar ensures a fast connection between the VELUX Roof Window and the roofing felt membrane. It helps to protect against drafts and wind driven rain and snow around the window installation. It comes as one piece making fitting easy, especially around the window corners. The transverse drainage gutter included also prevents any water ingress around the roof opening caused by missing or broken slates or tiles above the window. Product