BDX UK04 2000 Velux Insulation Collar / BFX Underfelt Collar Kit: 134cm x 98cm

£53.10 Inc. VAT
+ -

VELUX BDX UK04 Insulation Collar Kit.

Designed to exceed stricter building regulations by improving insulation performance of VELUX windows, the VELUX BDX 2000 kit contains both the high specification BDX insulation collar as well as a BFX underfelt collar and a traverse drainage channel.

Key aspects of the kit:

  • Helps projects achieve Part L Building Compliance.
  • Simple and easy to fit.
  • The BDX Collar insulates the window frame and reduces heat loss by preventing cold bridges.
  • The BFX Underfelt Collar provides a tighter fit and better water tightness between the window and your roof components.
  • The traverse drainage channel provides a secondary level of water protection against rainwater coming in from above the window.
  • Reduces condensation.


This kit is suitable for fitting with the Velux EDL, EDZ and EDW roof flashings.

Ashbrook Roofing offers FREE or EXPRESS delivery to United Kingdom postcodes excluding the Highlands, Islands and Ireland.

Delivery expectation for orders placed before 2.00pm are:

  • Standard (FREE): 2-3 working days
  • Express (£5.00): Next working day

Prior to shipment, we’ll let you know of our estimated date of delivery. Don’t worry if you have made other plans or find this inconvenient. If you can let us know a day in advance we’ll work with you to find a better alternative.

And remember, if you need help, have any concerns or if you need a delivery extra quickly, simply give our customer service team a call on 01629 828500, or email uscustomerservices@ashbrookroofing.co.uk and we'll do our very best to help.

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Copyright 2016 Ashbrook Roofing and Supplies Ltd. (Harrison Way, Matlock, Derbyshire, DE4 2LF) Company Registration Number: 4549398 | VAT Number: 419721937 | Telephone: 01629 828 500 | Email: sales@ashbrookroofing.co.uk