Velux Installation Products
Velux BFX 1000 under felt collar and transverse drainage gutter.
Velux BBX 0000 Vapour barrier which is 100% vapour-tight and prevents condensation.
Velux BDX 2000 Insulation collar for EDL/EDP/EDZ/EDW flashings, also includes BFX underfelt collar.
Velux BDX 2011 Insulation collar for EBL/EBW/EBP/ twin flashings with 18mm gap.
Velux BDX 2011 Insulation collar for EKL/EKW/EKP/ twin flashings with 100mm gap.