Velux BDX UK04 2000F Insulation + BFX Underfelt Recessed Collar 1340mm x 980mm
- Velux BDX UK04 insulation collar with dimensions 1340mm x 980mm (52.8" x 38.6")
- Reduces heat loss and eliminates cold bridges around roof window frames
- Includes flexible foam collar and pleated BFX underfelt collar for a tight, weatherproof seal
- Click fittings allow quick, accurate installation for trade and experienced DIY use
- Water safely drains via self-supporting drainage gutter ensuring roof integrity
- Compatible with standard Velux flashings: EDL, EDP, EDW, and EDZ
The Velux BDX UK04 insulation collar combined with the BFX underfelt recessed collar is designed specifically for roofers, builders, and loft converters aiming to improve thermal performance around roof windows. This system effectively reduces heat loss and prevents cold bridging, making it an essential component for energy-efficient roofing projects. Please note, this product is supplied as shown and fits standard Velux window sizes.
Application
Ideal for new builds, extensions, re-roofing, and repair jobs where weatherproofing and insulation around Velux roof windows are critical. The flexible foam collar ensures a snug fit around the window frame, while the pleated BFX underfelt collar creates a reliable seal against the roof structure. Together, they prevent drafts and moisture ingress, helping maintain a dry and comfortable loft or room beneath the roof.
Dimension
- Overall size: 1340mm x 980mm (52.8" x 38.6")
Material
- Flexible foam insulation
- Pleated synthetic underfelt collar
- Durable plastic click fittings
Type
- Roof window insulation and underfelt collar accessory
This collar system is compatible with Velux flashings EDL, EDP, EDW, and EDZ, ensuring a seamless fit and reliable weatherproofing. Accessories shown are included in the pack as described; please check product details for full contents.
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.
