Velux BDX CK01 2000F Insulation + BFX Underfelt Recessed Collar 550mm x 700mm
- Velux BDX CK01 2000F insulation collar with BFX underfelt recessed collar, size 550mm x 700mm (21.6" x 27.6")
- Designed to insulate around roof window frames, cutting heat loss and preventing cold bridging
- Flexible foam construction ensures a snug, secure fit on site
- Quick and precise assembly with click fittings for hassle-free installation
- Incorporates a self-supporting drainage gutter to safely channel water away
- Compatible with recessed EDJ or EDN flashings for standard window sizes
The Velux BDX CK01 2000F insulation collar combined with the BFX underfelt recessed collar is a practical solution for roofers, builders, and loft converters focused on energy efficiency and weatherproofing. This collar system fits neatly around roof window frames to reduce heat loss and eliminate cold bridges, helping maintain a warm, dry roof space. Please note, this product is designed for use with recessed flashings and standard window sizes.
Application
This collar set is perfect for new build projects, re-roofing, and extensions where roof windows are installed. It creates a tight seal between the window frame and roof structure, improving insulation performance and preventing water ingress under the underfelt layer. Its compatibility with recessed EDJ or EDN flashings makes it ideal for standard Velux roof windows, simplifying installation while ensuring long-term durability in typical UK weather.
Dimension
- Overall size: 550mm x 700mm (21.6" x 27.6")
Material
- Flexible foam insulation for a secure fit
- Durable pleated underfelt collar
Type
- Roof window insulation collar and underfelt recessed collar
This product ensures a reliable, weatherproof connection around roof windows to keep your projects energy-efficient and protected. All fittings shown are included, but note that the product is intended for use with specific recessed flashings. Images are for illustration purposes only.
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.
