What does skylight installation in Caernarfon involve?
We handle skylight installation across Gwynedd, including Caernarfon. 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.
Slate roofs, stone cottages and terraced valleys are typical across Wales, and slim rooflights that sit low in the slates suit them best. Think of skylight installation for new extensions, new openings and fit-only jobs.
Caernarfon sits about 13 km from Llangefni and 13 km from Bangor, Gwynedd, and we cover the whole LL55 postcode district and the roads in between.
Choices for your Caernarfon project
- Upstands and flashings
- New openings with joist trimming
- Supply and fit
- Electrics coordination
- Fit only (customer-supplied units)
- Fixed price in writing before work
- Making good inside included
What to check first
- Building Regulations approval (a building warrant in Scotland) may be needed
- Work at height is planned with suitable access
Planning and building rules for Caernarfon
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.
In Wales the limiting values are 2.2 W/m²K for a rooflight and 1.4 W/m²K (or WER Band B) for a roof window in an existing house. 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.
Skylight installation prices in Caernarfon
Guide prices for skylight installation in Caernarfon 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 |
From enquiry to finished job
- Tell us what you have. Send the LL55 postcode, a rough size and a couple of photos.
- Survey. We measure the opening, check the roof build-up and agree the options.
- Written price. You receive a fixed price listing the unit, the work and the lead time.
- Fit and make good. We fit, seal, test and finish the reveal, then hand over the paperwork.
Neighbouring towns
Other services in Caernarfon
Skylight installation in Caernarfon: questions
Is the survey free?
Yes, for new installations. Repair visits are charged.
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 work with builders?
Yes — on new extensions we fit to the builder's programme once the upstand or roof is ready.
How do I book a survey in Caernarfon?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
Do I need to be at home for the survey in Caernarfon?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
