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RooflightInstallers.co.uk
Cardiff & the Vale · Wales

Loft conversion roof windows in Cardiff & the Vale

Across Cardiff & the Vale we fit loft roof windows for homeowners, builders, roofers and commercial clients. The trade side matters: an extension company with jobs running in the three towns we list does not want to coordinate a different fitter for each. We can take the rooflight element of every site, fitted to the maker's instructions and left ready for the next trade. Domestic customers get the same fitting standard, quoted in writing before work begins.

Guide prices in Cardiff & the Vale

Pair of windows

£1,795 – £2,745including VAT at 20%

Two roof windows into a loft room, flashings and linings

Three or four windows

£2,745 – £4,545including VAT at 20%

Bigger loft rooms or stairwells

Balcony or combination

£4,545 – £7,195including VAT at 20%

Balcony-style or stacked window combinations

Guide ranges for supply & fit. Your price is fixed in a written quote after we have seen photos or surveyed. Scaffold, access towers or a crane are priced separately if the job needs them, and building control fees, where a job needs them, are shown as their own line.

Towns we list in Cardiff & the Vale

Builders and roofers working in Cardiff & the Vale can use us for the rooflight element of a job, wherever the site is in Wales. Homeowners can book us directly. In both cases the fitters come to the address, the work follows the maker's instructions, and a written quote fixes the price first. Fitting is carried out by vetted teams under S&K's direction.

Included in the work

  • Tiles or slates cut and refitted, with the roof left weathertight
  • Matching or combination flashing kits for windows side by side
  • Underlay dressed and taped around every frame
  • Balcony-style windows — We check the rafters and the roof pitch before recommending balcony-style windows.
  • Approved loft drawings — We work to the window positions on your approved loft drawings or agree changes with your builder first.

Rules that apply in Wales

For a Welsh home, start with where the house is. In a conservation area, National Park, AONB or World Heritage Site, a rooflight needs planning permission; outside those, permitted development usually covers one that projects 150 mm or less. Side-facing roof windows within 10.5 m of a boundary must be obscure-glazed and fixed. New openings need building regulations approval, and replacements we fit are notified with a building notice, as we are not registered with a competent person scheme. We confirm all of this for your address.

Common questions in Cardiff & the Vale

How long does fitting take?

Fitting a loft roof window into an existing, correctly sized opening is often a day's work. New openings take longer, because joists or rafters need trimming, an upstand or flashing has to be built or fitted, and the inside needs finishing. Large units that need lifting gear, and days lost to rain, can stretch things further. Your written quote gives a realistic estimate for your roof.

Do you cover Cardiff & the Vale?

Yes. Fitters travel to addresses in Cardiff & the Vale and the surrounding districts, including CF postcodes. We do not run an office there; the survey and the fitting happen at your property. A few island and remote postcodes are covered by arrangement; if yours is one, we confirm travel and dates before quoting.

Can you fit the loft roof window I bought online?

Yes, fit-only is one of our core services. Send the product link or spec, photos of the roof and rough sizes, and we can usually price it from those. Before fitting we check the delivery for damage, which should be reported to the seller, plus the size against the opening, the flashing kit and the roof pitch. The product warranty stays with the maker or seller, and our guarantee covers the fitting.

Rear extension at dusk with lit rooflights and a roof lantern
Ready when you are

Fitting in Cardiff & the Vale

Send photos and rough sizes, or ask for a survey visit for install work. You get one fixed written price before anything starts.

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