Velux BDX FK08 2000F Insulation + BFX Underfelt Recessed Collar 660mm x 1400mm
- Velux BDX FK08 insulation collar paired with BFX underfelt recessed collar, sized 660mm x 1400mm (26" x 55")
- Designed to insulate around roof window frames, cutting heat loss and preventing cold bridges
- Flexible foam construction ensures a snug, secure fit around windows
- Click-fit system allows quick, precise installation for trade and experienced DIY users
- Water drains efficiently via integrated self-supporting drainage gutter for reliable weatherproofing
- Compatible with EDL, EDP, EDW and EDZ flashings for standard Velux window sizes
The Velux BDX FK08 insulation collar combined with the BFX underfelt recessed collar provides a high-performance sealing solution for roof windows, tailored for roofers, builders, and loft converters. This product helps reduce heat loss and eliminate cold bridging around window frames, ensuring your roofing projects meet energy efficiency and weatherproofing standards. Please note, this product is designed to fit standard Velux window sizes and is supplied as shown.
Application
Perfect for new builds, extensions, and re-roofing jobs involving Velux roof windows, this collar system creates a tight, weather-resistant seal between the window frame and roof structure. It’s especially useful when fitting or replacing underfelt membranes, providing a straightforward installation process that tradespeople and seasoned DIYers can rely on. The integrated drainage gutter directs water safely away, protecting the roof cavity from moisture ingress in typical UK weather.
Dimension
- Collar size: 660mm x 1400mm (26" x 55")
Material
- Flexible insulating foam
- Durable, pleated underfelt collar
Type
- Roof window insulation and underfelt recessed collar
This collar system is compatible with EDL, EDP, EDW, and EDZ Velux flashings, making it a dependable choice for effective thermal performance and weatherproofing on pitched roofs. Accessories shown are not included.
Delivery
Important: The following delivery information applies only to orders placed online.
Delivery Times
When placing your order, you will be able to view available delivery times at the checkout.
Please note: while we aim to deliver within 2–3 business days, this is subject to stock availability. A member of our team will be in touch after you place your order to confirm your delivery date.
Click & Collect is also available from selected branches. However, please be aware that stock levels can fluctuate, so we’ll confirm product availability and collection timing once your order is placed.
Delivery Charges
Orders over £150 ex VAT within our local delivery area qualify for free delivery. This excludes palletised or specialist products.
For orders under £150 ex VAT, standard delivery is £10 plus VAT. Certain products have specific delivery costs:
- Civil Engineering products: £20 + VAT.
- Roofing Tiles under £249.99 ex VAT: £60 + VAT.
Delivery charges and policies may vary at the discretion of our branches, and we reserve the right to amend them as required.
We offer a variety of delivery options to meet your needs nationwide, including pallet shipping (subject to size and weight restrictions), site delivery, and same-day or next-day delivery via TradeKart (available in selected postcodes).
Delivery charges are calculated based on your location, the products ordered, and your selected delivery method. Final costs will be displayed at checkout. If you have specific delivery requirements, please contact your local branch via our Branch Finder.
For any delivery-related enquiries, please email our sales team at websales@lordsbm.co.uk.
