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RooflightInstallers.co.uk
Gelligaer · CF82 · Gwent

Rooflight replacement in Gelligaer

Rooflight work is weather work. Membranes, primers and sealants all want a dry surface, so a fitting day in Gelligaer is planned around the forecast rather than pinned to a date regardless of rain. The opening is kept covered whenever it is exposed, and a roof is not left open overnight without a proper temporary seal. That approach applies to every replacement rooflight we install, from a new opening to a straight swap or a fit-only job. We cover Gelligaer, the CF82 district and the rest of Gwent.

Guide price from £1,095 · Supply & fit; building control notice fee extra in England and Wales

What the job costs in Gelligaer

Like-for-like swap

£1,095 – £1,695including VAT at 20%

Old dome or unit removed and disposed of, new glass rooflight fitted to the existing sound kerb

New upstand and swap

£1,695 – £2,645including VAT at 20%

Old kerb taken off, new insulated upstand built, roof covering made good, new unit fitted

Opening or large unit

£2,645 – £4,545including VAT at 20%

Electric or larger replacement, including making good inside

Guide ranges for supply & fit; building control notice fee extra in England and Wales. 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.

Areas around Gelligaer we cover

Jobs across CF82, CF81 and NP12 are part of our normal cover for Gelligaer. We are not an office on the high street. Our fitting teams come out to the property from wherever they are working that week. Neighbouring places such as Blackwood and Pontypridd are covered on the same terms, so a house on the edge of town is no harder to book than one in the centre.

What we check on a supplied unit

Supply and fit tends to suit people who would rather not pick a unit from a catalogue. We look at the roof, the opening and how you use the room, then put a replacement rooflight on the quote that fits all three. Fit-only suits people who already know what they want, or have one on site. We are happy with either. The difference is who stands behind what: on fit-only, the maker or retailer covers the product, and our workmanship guarantee covers the installation.

What the job includes

  • Kerb inspected for rot, height, level and fall once the old unit is off
  • New unit bedded, fixed and sealed exactly as its maker shows
  • Internal reveal made good where the old trim or plaster was damaged
  • Energy rules for the new unit — We make sure the replacement meets the current energy limit, not just the old unit's performance.
  • Inside finishes — We check the condition of the plaster and trim around the opening from inside.

A typical installation day

Morning first: the team arrives, introduces itself and walks through the job with you. Dust sheets go down in the room below and along the route in. Then the opening and upstand, or the flashing on a pitched roof, are checked against the unit's measurements. A replacement rooflight goes in, is fixed to the maker's pattern and sealed into the roof covering. Inside, the reveal is finished as quoted. Before leaving, the team clears debris and talks you through what was done. Most jobs of this type take one day.

Do you need permission in Gelligaer?

In Wales, a new rooflight opening generally needs building regulations approval, and a replacement needs either a scheme-registered installer's certificate or a building notice to the council. We are not registered with a scheme, so we use a building notice and show the fee on the quote. Rooflights must meet 2.2 W/m²K and roof windows 1.4 W/m²K. Planning is tighter than in England: rooflights are not permitted development in conservation areas, National Parks, Areas of Outstanding Natural Beauty or World Heritage Sites, so we check your address before quoting.

Details that speed up your quote

What we cannot see, we have to guess, and guesses make quotes wider. So the more you send, the tighter the price. Useful: shots from the roof or garden, shots from the room underneath, a rough width and length, the roof finish, any access problems, and the product page if you have already ordered. Add the property postcode around CF82 and we will come back with a quote or a survey date.

Common questions in Gelligaer

How does payment work?

Payment terms are set out on your written quote before you accept it. Depending on the job, that may mean a deposit, stage payments for larger work, or payment on completion. The contract is with S&K Property Investments and Improvement Ltd, part of the S&K Group. Nothing is added without your agreement: if something unexpected comes up, we discuss it and agree any change before carrying on.

Will my new replacement rooflight leak?

A correctly fitted unit should not. Leaks usually trace back to the detail around the frame: an upstand that is too low, a membrane or flashing that is not dressed properly, sealant applied to a damp surface, or water ponding against the kerb. We fit to the maker's instructions and check each of those points. The fitting carries a written workmanship guarantee, with its terms set out on your quote.

Do you make good inside after fitting?

Yes, where the quote includes it. Internal finishing usually means lining the reveal with plasterboard, taping or skimming, and fitting trim where it meets the ceiling. Some people prefer their own plasterer or decorator to finish off, which is fine. The written quote spells out exactly where our work stops, so nobody is left guessing about who does what once the unit is in.

Get in touch with the details of your Gelligaer property and we will explain what the job involves and what it costs.

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

Replacements in Gelligaer

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

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