Velux BFX PK08 1000 Underfelt Collar Transverse Drainage Gutter 940mm x 1400mm
- Velux BFX PK08 underfelt collar with transverse drainage gutter, measuring 940mm x 1400mm (37" x 55") for precise fitting.
- Ensures secure water shedding around roof windows, preventing drafts and wind-driven rain or snow ingress.
- One-piece pleated design for straightforward installation around window corners and roof battens.
- Compatible with pitched roofs from 15º to 90º, suitable for ventilated or unventilated roof structures.
- Underfelt made from special diffusion polypropylene; drainage gutter constructed from galvanised steel for durability.
The Velux BFX PK08 underfelt collar with transverse drainage gutter is designed for roofing professionals and experienced DIYers installing roof windows. It provides a reliable, weatherproof seal between the roof window frame and underfelt, ensuring long-term protection against water ingress and drafts. Please note, this product is supplied as a single unit measuring 940mm x 1400mm (37" x 55"), designed to fit a variety of roof pitches.
Application
This underfelt collar is essential for creating a tight, secure connection around roof windows, helping to safely channel water away from the vulnerable junction between window and roof covering. It is suitable for new builds, re-roofing projects, and loft conversions where waterproofing and ventilation control are critical. The transverse drainage gutter efficiently directs water runoff, reducing risk of leaks and damage in UK weather conditions. Compatible with both ventilated and unventilated roof structures, it fits roofs pitched between 15º and 90º, making it versatile for most pitched roof installations.
Dimension
- Overall size: 940mm x 1400mm (37" x 55")
Material
- Underfelt: special diffusion polypropylene
- Drainage gutter: galvanised steel
Type
- Roof window underfelt collar with integrated drainage gutter
This product is supplied as a single unit and 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.
