Velux BFX UK04 1000 Underfelt Collar Transverse Drainage Gutter 1340mm x 980mm
- Velux BFX UK04 underfelt collar with transverse drainage gutter, size 1340mm x 980mm (52.8" x 38.6")
- Ensures tight seal between roof window frame and underfelt to prevent drafts and water ingress
- Features transverse drainage gutter to safely channel water away from window
- Suitable for pitched roofs from 15º to 90º, compatible with ventilated and unventilated structures
- Underfelt made from special diffusion polypropylene; drainage gutter crafted from galvanised steel
The Velux BFX UK04 underfelt collar with transverse drainage gutter is designed for roofers, builders, and loft converters who need a reliable solution to seal and weatherproof roof windows. It provides a secure connection between the window frame and the underfelt, while the integrated drainage gutter safely channels water away, ensuring long-term durability and protection against the UK’s unpredictable weather. Please note, this product is supplied as shown without additional accessories.
Application
This underfelt collar is ideal for use in new builds, extensions, re-roofing, and repair work involving roof windows. It creates an effective barrier against drafts, wind-driven rain, and snow, while the transverse drainage gutter prevents water buildup above the window. Its pleated one-piece design allows for easy fitting around corners and roof battens, making installation straightforward even on complex roof shapes. Compatible with roof pitches between 15º and 90º, it works well on both ventilated and unventilated roof constructions.
Dimension
- 1340mm x 980mm (52.8" x 38.6")
Material
- Special diffusion polypropylene underfelt
- Galvanised steel drainage gutter
Type
- Roofing collar and drainage gutter accessory
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.
