What is skylight installation?
Skylight installation is the full job: survey, specification, structural opening, upstand or flashing, fitting the unit, waterproofing and making good inside. We fit into new extensions, cut new openings in existing roofs and fit units you have already bought.
Most problems with rooflights come from installation, not products. Square openings, correct upstands, properly dressed membranes and sealed reveals are what make a rooflight last.
Every installation starts with a free survey for new installs and a fixed written quote before any work starts.
- Scope
- Survey, supply, fit, make good
- Roofs
- Flat, pitched, commercial
- Access
- Ladders, towers, scaffold or lifting gear as needed
- Paperwork
- Product data and warranties handed over
- Duration
- Usually 1–3 days per opening
- Booking
- Survey dates offered when we reply
Why choose skylight installation?
- Free survey for new installations
- Fixed price in writing before work
- New openings in existing roofs
- Fitting for builders on new extensions
- Fit-only for units you have bought
- Making good inside included
What options are there?
- Supply and fit
- Fit only (customer-supplied units)
- New openings with joist trimming
- Upstands and flashings
- Electrics coordination
- Internal plaster reveal
What should you check before you order?
- Structural changes may need an engineer's check
- Building Regulations approval (a building warrant in Scotland) may be needed
- Work at height is planned with suitable access
- Fit-only work relies on the product being suitable and complete
Planning and building-regulation rules differ between England, Wales, Scotland and Northern Ireland. Our planning guide and building regulations guide set out each nation's position.
How much does skylight installation cost?
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| New opening in an existing roof, supply and fit | £2,395 – £5,395 | £1,995 – £4,495 |
| Supply and fit into a new extension Typical | £1,435 – £3,595 | £1,195 – £2,995 |
| Fit only, customer-supplied unit | £595 – £1,195 | £495 – £995 |
Guide prices from fit-only work to a new opening with supply and fit. Your fixed price follows a free survey for new installations.
Skylight installation: common questions
Do you fit rooflights bought elsewhere?
Yes. We check the product and the opening first, and our workmanship terms cover the fitting rather than the product.
How long does installation take?
Fitting into a prepared upstand takes about a day. A new opening in an existing roof, including making good, often takes two to three days.
Do I need a structural engineer?
For new openings that cut joists or rafters, a structural check is sensible and building control may ask for calculations.
Who handles building control?
We tell you which route applies — building control approval, a building warrant in Scotland, or in England and Wales self-certification by a registered competent person — and supply the product data.
Do you work with builders?
Yes — on new extensions we fit to the builder's programme once the upstand or roof is ready.
Is the survey free?
Yes, for new installations. Repair visits are charged.
