Guide prices
Per flat rooflight
Fit a supplied unit to your prepared upstand, sealed and trimmed
Per roof lantern
Assemble and glaze a supplied lantern on your upstand
Two-person day rate
Fitting team for multi-unit or mixed work
Guide ranges for labour only, ex VAT for trade accounts. 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.
Fitting across Caernarfon and nearby
Covering Caernarfon means covering the people who live and work there, not a single postcode. We take on domestic and commercial jobs in LL55, LL61 and LL56, and are happy to quote further out in Bangor and Holyhead. If your address sits between towns, tell us and we will confirm whether it falls in our normal area or needs travel set out separately on the quote.
Included in the work
- Flat rooflights fitted, sealed and trimmed on your kerbs
- Roof lanterns assembled and glazed on your upstand
- A short note of anything we found that needs your attention
- Building control sign-off — We agree with you how building control is handled before fitting.
- Programme and access — We confirm site access, lifting arrangements and working hours before the visit.
How a fitting day runs
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 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 half a day to a day per unit.
Regulations for Caernarfon properties
Welsh rules differ from England's in one important way: rooflights lose permitted development rights in conservation areas, National Parks, AONBs and World Heritage Sites. Elsewhere on a house, a rooflight that projects no more than 150 mm and stays below the highest part of the roof is usually fine. Building regulations still apply to new openings, replacements need a building notice, and as we are not scheme-registered we agree up front who gives it, and the energy limit for rooflights is 2.2 W/m²K. A new Welsh Approved Document L takes effect on 4 March 2027.
What to send for a quick 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, LL55 or nearby, confirms travel.
Common questions in Caernarfon
Do you need scaffolding to fit a rooflight?
Not always. Single-storey roofs can often be reached safely with ladders, a tower or edge protection. Higher roofs, steep pitches and large units usually need scaffold or a mobile platform, and heavy glass may need a crane. We assess access from your photos or at the survey, and any scaffold or lifting cost is shown as its own line on the written quote.
Will my new 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.
What upstand height and roof pitch does 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.
Running a job in Caernarfon? Send the drawings or unit details and we will price the fitting, plus VAT, in writing.
