Guide prices
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.
Coverage in and around Cardiff
Fitters travel to the job, so the address is what counts. In Cardiff that means postcode districts CF10, CF11 and CF24, and the same teams can just as easily take on work in Penarth, about 3 miles away, or Caerphilly at roughly 7 miles. Survey and fitting dates are offered according to fitter availability, and travel is built into the quote rather than added later.
What we do on the day
- Phasing agreed so occupied areas stay dry and usable
- Old units removed, with waste taken off site
- Kerbs checked and packed, adapted or rebuilt where needed
- Energy limits for non-domestic roofs — We check new units against the energy limits for non-domestic buildings.
- Fragile roofs and rooflights — We treat every rooflight and the roof around it as fragile until we have checked it.
From arrival to clean-up
Arrive and agree the plan. Sheet the floor and furniture. Set up the ladder, tower or scaffold. Check the opening, the upstand or flashing, and the unit against the paperwork. Fix and pack a commercial rooflight level. Seal it into the roof. Line the reveal or fit the ceiling trim. Clean the glass, clear the waste, and talk you through it. That is the shape of most fitting days, and for this type of job it usually takes about a day per unit, longer on big roofs.
Do you need permission in Cardiff?
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.
Details that speed up your quote
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, CF10 or nearby, confirms travel.
Common questions in Cardiff
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.
What upstand height and roof pitch does commercial rooflight fitting need?
It depends on the product. Manufacturers usually specify a minimum upstand height above the finished roof surface, and a minimum pitch on the glass so rain runs off. We follow the maker's figures for your unit rather than a rule of thumb. If your existing kerb or roof falls short, we explain the options, such as raising the upstand or choosing a unit with built-in pitch.
Can you fit a rooflight in winter or when it is raining?
Yes, within limits. Cold is less of a problem than wet, because membranes, primers and sealants need a dry surface to bond. We plan fitting days around the forecast and may move a date if heavy rain is due. If the roof has to be opened up, it is not left overnight without a temporary weather seal, so the room below stays dry while the work is finished.
Tell us your postcode, CF10 or close by, and what you want fitted. We will reply with the next steps and a quote.
