Skylight installation for Llantwit Major: the essentials
Skylight installation in Llantwit Major means survey, supply and fit — new openings, extensions and fit-only work. We cover the CF61 district and the rest of South Glamorgan, with a survey before any price is fixed.
Welsh planning rules exclude rooflights from permitted development in conservation areas and National Parks, so we check the designation before quoting. In Llantwit Major, as anywhere, skylight installation is the usual choice for new extensions, new openings and fit-only jobs.
Neighbouring towns include Cowbridge (6 km) and Bridgend (12 km). We offer a survey date when we reply to your enquiry.
Specification options
- Supply and fit
- Fit only (customer-supplied units)
- Electrics coordination
- Internal plaster reveal
- New openings with joist trimming
- Fit-only for units you have bought
- Fitting for builders on new extensions
Things we check at survey
- Structural changes may need an engineer's check
- Building Regulations approval (a building warrant in Scotland) may be needed
Consents for skylight installation in Llantwit Major
In Wales a rooflight on a house is usually permitted development if it stands no more than 15 cm proud of the roof, except on protected land such as conservation areas and National Parks, where permission is needed. Listed buildings need listed building consent from the council, and flats have no householder permitted development rights.
Welsh Building Regulations expect new or replacement rooflights to reach 2.2 W/m²K and roof windows 1.4 W/m²K or a Band B rating. Wales also has its own overheating rules (Part O) for new homes, in force since November 2022.
Our planning guide covers each nation in more detail.
What does skylight installation cost in Llantwit Major?
Guide prices for skylight installation in Llantwit Major are the same as anywhere we work — what changes the price is the job: access, structure, scaffold and finishing.
| 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 |
The process, step by step
- Tell us what you have. Send the CF61 postcode, a rough size and a couple of photos.
- 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.
- Fit and make good. We fit, seal, test and finish the reveal, then hand over the paperwork.
Skylight installation near Llantwit Major
Other services in Llantwit Major
Common questions
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.
Do you work with builders?
Yes — on new extensions we fit to the builder's programme once the upstand or roof is ready.
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 to be at home for the survey in Llantwit Major?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
How do I book a survey in Llantwit Major?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
