The VELUX BDX insulates the window frame and reduces heat loss. The installing of the window is a simple with easy assembly of the collar.
The VELUX BDX 2000 Insulation Collar reduces heat loss by insulating around the roof window frame and comes with an underfelt collar which ensures a weather tight seal between the roof window and the roof. The underfelt collar is made from diffusion open material which minimises risk of condensation. It includes a transverse drainage gutter too which leads water away from the head of the window if a tile or slate is broken above the window. Easy installation and comes in a variety of sizes. The BDX 2000 will give you extra protection and peace of mind for a low cost.