VELUX Window Installation
A new roof window brings natural light and ventilation into spaces that were dark or stuffy - loft conversions, extensions, stairwells and landings. Fitted correctly into the roof structure with proper flashing, a VELUX window performs for decades.
We install VELUX roof windows into existing and new roofs: cutting the opening, fitting the window with the correct flashing kit for your roof covering, and making good inside and out.
Installation includes
- Opening cut and prepared in the existing roof
- Correct VELUX flashing kit for your roof covering
- Insulation and vapour detailing around the opening
- Interior finishing around the new window
- Centre-pivot and top-hung options
- Advice on size, position and glazing options
Positioning and sizing
Where a roof window goes and how big it should be depends on your rafter spacing, the roof's pitch and what the room below needs. We will advise on sensible options - including where planning or Building Regulations apply to your project.
The flashing matters as much as the window
Most roof window leaks come from the flashing, not the window. Using the correct flashing kit for your roof covering - slate, tile or flat - and fitting it properly is what keeps the installation watertight for the long term.
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Frequently asked questions
- Do I need planning permission for a roof window?
- Usually not - roof windows are typically permitted development if they do not project significantly beyond the roof plane. Exceptions exist for listed buildings and some conservation areas; we can advise on your property.
- How long does installation take?
- A single roof window into an accessible roof is normally fitted within a day. Larger installations or multiple windows take longer - we will confirm timings when we quote.
Get a free quote
Tell us about your roof and we will come back with a free, no-obligation quote.