Guide prices in Caerphilly
Per standard unit
Flat glass or polycarbonate unit on an existing kerb, as part of a multi-unit job
Per large unit
Larger or ventilating units, edge protection in place
Programme of works
Phased replacement across a building, priced from a survey
Guide ranges for supply & fit, per unit; site set-up priced separately. 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.
Covering CF83 and neighbouring districts
Looking at a property near Caerphilly but not quite in it? We work across CF83, CF82 and NP11 and outwards to Risca, Pontypridd and Gelligaer. Give us the full postcode when you get in touch, because access, parking and the route for a large unit all depend on the exact street. Those details shape the quote for any job around Caerphilly.
On the day, we cover
- New units fitted, sealed and weathered into the roof covering
- Phasing agreed so occupied areas stay dry and usable
- Roof survey of every unit, kerb and the fragile areas around them
- Fire performance near boundaries — We check how close the rooflights are to the site boundary and to escape routes.
- Fragile roofs and rooflights — We treat every rooflight and the roof around it as fragile until we have checked it.
A typical installation day
On the day, you need to be in at the start and at the end. In between, the fitters get on with it. They will want the room below cleared where possible, a parking spot if you have one, and somewhere to set the unit down safely. After checking the opening and the upstand or flashing, they fix a commercial rooflight, seal it and finish the inside. Packaging and any old unit leave with them unless the quote says otherwise.
Planning, building control and Caerphilly
On commercial roofs in Wales, new openings and structural changes go through building control, and fire performance has to be considered where rooflights are near a boundary. Smoke vents must be certified products with controls set up by a specialist. We confirm what applies to your building before quoting.
Getting a price from photos
Each detail you send takes a question off our list. Photos inside and out show the opening and the ceiling. Rough measurements tell us the unit size. The roof covering tells us how it will be sealed in. Access notes tell us whether a tower or scaffold is needed. A product link, if you have one, lets us check it against the opening. Your postcode, CF83 or nearby, confirms travel.
Common questions in Caerphilly
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.
Can you remove and dispose of the old rooflight?
Yes. Taking out the old unit is part of any replacement job, and it leaves with the rest of the waste unless you ask to keep it. Old domes, glass and frames go through proper waste routes. If removal turns up a rotten kerb or damaged decking, we show you what we have found and agree the repair with you before going any further.
Will my new commercial 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.
Planning a commercial rooflight in Caerphilly? Tell us about the roof and we will come back with a clear price in writing.

