How we approach skylight installation in Cardiff
For Cardiff homes and buildings we offer skylight installation: survey, supply and fit — new openings, extensions and fit-only work. We measure first, specify to the opening and confirm any planning or building-control points before quoting.
Many Welsh homes have older single-storey rear extensions where a glass rooflight brightens a dark kitchen. Skylight installation suits new extensions, new openings and fit-only jobs.
We cover all of Cardiff and the CF10 district, and nearby Penarth and Dinas Powys.
What you can choose
- Electrics coordination
- Internal plaster reveal
- Supply and fit
- New openings with joist trimming
- Fit only (customer-supplied units)
- Fixed price in writing before work
- Making good inside included
Before you order: points to check
- Work at height is planned with suitable access
- Structural changes may need an engineer's check
Planning, building control and Cardiff
Welsh householder permitted development (Class C) allows rooflights that project no more than 15 cm and sit no higher than the existing roof — but not in conservation areas, National Parks, AONBs or World Heritage Sites. 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. A revised Welsh Approved Document L takes effect on 4 March 2027; rooflights in new dwellings stay at 2.2 W/m²K.
Read the planning permission guide before you commit to a design.
Skylight installation prices in Cardiff
These are typical supply-and-fit ranges. For an address in Cardiff, scaffold, a hoist for heavy glass, or a new structural opening can move the figure, which is why we survey first.
| 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 |
How the job runs
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Cardiff address.
- Measure and check. A surveyor visits Cardiff, measures and checks structure and access.
- Written price. You receive a fixed price listing the unit, the work and the lead time.
- Fitting and handover. We install, clean down and leave product and warranty documents.
Skylight installation near Cardiff
Other services in Cardiff
Questions about skylight installation in Cardiff
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 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 Cardiff?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
Can you work alongside my builder in Cardiff?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
