Roof lantern installation in Caernarfon

Caernarfon guide prices

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.

Fitting across Caernarfon and nearby

Fitters travel to the job, so the address is what counts. In Caernarfon that means postcode districts LL55, LL61 and LL56, and the same teams can just as easily take on work in Bangor, about 9 miles away, or Holyhead at roughly 19 miles. Survey and fitting dates are offered according to fitter availability, and travel is built into the quote rather than added later.

Buying your own, or letting us supply

There are two ways to do this. Supply and fit means we source a roof lantern that suits your roof and install it, so one company answers for both the product choice and the fitting. Fit-only means you buy the unit and we install it. With fit-only, the product warranty stays with the maker or seller, and our written guarantee covers the fitting work. Both routes get the same checks on the opening, the upstand and the maker's instructions before anything is fixed.

On the day, we cover

• Upstand checked for size, level and square before the kit is opened
• Roof membrane checked where it meets the lantern frame
• Internal trims fitted to the ring beam or upstand
• Heat and glare — We talk through the glass options before you order a large lantern.
• Upstand size and tolerance — We check the kerb against the lantern maker's figures before the kit is opened.

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 roof lantern, seal it and finish the inside. Packaging and any old unit leave with them unless the quote says otherwise.

Planning, building control and Caernarfon

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 we fit go through a building notice because we are not scheme-registered, 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

Questions before you commit? Send them over with your Caernarfon postcode and we will answer them plainly, with a quote alongside.