Skylight installation for Truro: the essentials
We handle skylight installation across Cornwall, including Truro. In short: survey, supply and fit — new openings, extensions and fit-only work. The survey checks structure, weathering and orientation, so the quote reflects your actual roof.
Western coasts take wind-driven rain, so we pay close attention to upstand height and flashing laps on exposed roofs. In Truro, as anywhere, skylight installation is the usual choice for new extensions, new openings and fit-only jobs.
Truro is the main town we list in Cornwall; we also cover nearby Falmouth and Redruth.
Choices for your Truro project
- Upstands and flashings
- Electrics coordination
- Internal plaster reveal
- Fit only (customer-supplied units)
- Supply and fit
- Fitting for builders on new extensions
- Making good inside included
What to check first
- Work at height is planned with suitable access
- Structural changes may need an engineer's check
Consents for skylight installation in Truro
In England a rooflight on a house is usually permitted development under Class C if it projects no more than 150 mm beyond the roof slope and sits no higher than the ridge. A rooflight on a side-facing slope must be obscure-glazed, and fixed shut unless the opening part is more than 1.7 m above the floor.
Under Approved Document L, a rooflight added to an English home must achieve at least 2.2 W/m²K (horizontal plane), and a roof window 1.4 W/m²K or Window Energy Rating Band B. In an extension, glazing including rooflights is normally limited to 25% of the new floor area plus any windows or doors the extension covers, unless a whole-house calculation shows otherwise.
See our building regulations guide for U-values, glazing limits and self-certification.
Guide prices for Truro
The ranges below are typical for straightforward jobs; your fixed price follows a survey of your roof.
| 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 |
From enquiry to finished job
- Send the details. Postcode, rough size and a photo of the roof and room.
- Free site visit. For new installs we survey free, measure and confirm the roof detail.
- Agree the quote. You approve the specification and price before anything is ordered.
- Fitting and handover. We install, clean down and leave product and warranty documents.
Skylight installation near Truro
More we do in Truro
Questions about skylight installation in Truro
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 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.
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.
Is the survey in Truro free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
Can you work alongside my builder in Truro?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
