VELUX BDX MK04 2011 Twin Insulation Collar 78x98cm

For the ultimate in insulation, we recommend the VELUX BDX insulation collar. It reduces heat loss by eliminating thermal bridges between the window and your roof structure and it also comes with VELUX BFX underfelt collar. This insulation collar is suitable for twin installaton only (18mm gap).

The VELUX BDX 2000 insulation packages comes complete with the VELUX BFX underfelt collar

The VELUX BDX insulation collar sits between the roof structure and the window frame and insulates the gap between the two, which reduces heat loss. The insulation collar also includes the BFX underfelt collar in the package. The BFX ensures a weather tight seal between the roof window and the roof. The BDX 2000 comprises of three installation products - Insulation Collar (BDX), Underfelt Collar (BFX), and drainage gutter. Together they seal and insulate around the window externally.

Insulation collar – BDX

• Insulates around the roof window frame, reducing heat loss and eliminating cold bridges
• Makes insulating and installing the roof window a simpler process
• Comes with underfelt collar (BFX)
• Made to all standard roof window sizes
• Click fittings ensure fast and accurate assembly
• Supplied with BFX underfelt collar and transverse drainage gutter