For the ultimate in insulation, VELUX recommend the BDX Insulation Collar.
It reduces heat loss by eliminating thermal bridges betweenthe window and your roof structure. Also comes with BFX UnderfeltCollar.
- Underfelt material: frothed polyethylene, heat transfer group 040.
- Collar material: polypropylene.
- Material thickness: 0.5 mm.
- SD value (water vapour diffusion resistance): 0.03 m.
3 – 5 day delivery. In most cases, products will be delivered within 3 – 5 working days. If you would like specific details on your product, please call 0844 488 0993 or email Ken’s Yard Customer Service
All deliveries require a signature – don’t get carded, let us know if your order can be left at a secure location. Job Done.
Returns Policy – Not happy with your order? We’ll let you return your order for a full refund, no reason required, provided the goods are with the original packaging and are returned within the time stated in an unused condition. Click on the link to view the full details
Q: Is this product suitable for use with recessed flashings?
A: The BDX 2000 underfelt and insulation collar kit is suitable for use with standard, single Velux flashings only:
If you decide to go for one of the recessed flashings (these allow your roof window to sit lower into the roofing structure than the standard flashings do, for a more streamlined look), you must instead opt for one of the recessed flashings plus insulation kits -- these include insulation and underfelt collars that are compatible with the recessed flashings:
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