Installation products

Our highly engineered roof windows have the latest technology built-in. Our research and development teams are continuously refining products to improve performance.

The following features come as standard with all of our roof windowBuilding regulations relating to insulation and air-tightness of roof window installations have become more stringent. We have not only developed a range of installation products to help make it quick and easy for you to be compliant, but also offers increased energy efficiency.s and are designed to make installation and operation easier, as well as ensuring our products look their best.

Vapour barrier – BBX

  • Helps prevent condensation from forming in the roof structure.
  • A fully welded rubber gasket with a double pressure seal guarantees speedy installation and a vapour and air tight solution.
  • Reinforced corners for extra security against perforation.

Insulation collar – BDX

  • Insulates around the roof window frame, reducing heat loss and eliminating cold bridges.
  • Supplied with BFX underfelt collar.
  • Click fittings ensure fast and accurate assembly.

Underfelt collar – BFX

  • Ensures a weathertight seal between the roof window and the roof.
  • Made from diffusion open material to minimise risk of condensation.
  • Comes with transverse drainage gutter to lead water away from the head of the roof window if a tile or slate is broken above the window.

Flashing

  • Marries the roof window to the roofing material and ensures a
    weathertight seal.
  • Standard VELUX flashings are compatible with VELUX
    installation products

For installation instructions.

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