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RooflightInstallers.co.uk
Cornwall · TR11, TR10, TR3, TR1

Rooflight installers in Falmouth

Rooflight jobs in Falmouth usually start for one of four reasons. You have bought one and need it fitted. You have an old one that leaks, mists or has gone cloudy. You want more daylight and need a new opening cut. Or you are a builder who wants the rooflight part done by a specialist. We cover all four across Cornwall. You might also want a lantern over a new kitchen, a sun tunnel for a dark hallway, or a hatch to reach the roof. Start with the service that matches your job.

Fitting jobs in Falmouth

Fitting & replacement

Flat roof rooflights

Pitched roofs & lofts

Commercial & trade

Why the fitting matters as much as the unit

Builders run many trades at once, and the rooflight often gets squeezed in between the roofer and the plasterer. That is when corners get cut: an upstand built a little low, sealant applied in damp conditions, a reveal left rough. Bringing in a fitting specialist for that one stage means someone is focused on it alone, following the maker's instructions, with time set aside to finish the inside properly. The builder keeps control of the programme, and the rooflight gets proper attention.

Postcodes and places we cover

Covering Falmouth properly means covering the whole of it, house or business unit, across TR11, TR10 and TR3. Beyond the town, we take on jobs in Truro (8 miles) and Redruth (9 miles) as standard. Each one gets the same survey or photo-based pricing, the same written quote, and the same fitting standard.

Planning and building rules in England

In England, a new rooflight opening generally needs building regulations approval because the roof structure is altered and the glazing must meet energy rules: 2.2 W/m²K for a rooflight in an existing home, or 1.4 W/m²K (or WER Band B) for a roof window. Planning is often not needed on a house: permitted development covers rooflights that stand no more than 0.15 m proud of the roof slope and sit below the highest part of the roof. Flats, listed buildings and areas with an Article 4 direction are different, so we check your address first.

Questions about rooflight fitting in Falmouth

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.

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.

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.

Can you replace an old dome without redoing the whole roof?

Usually, yes. If the existing kerb is sound, level and tall enough, a new unit can often sit on it with a fresh seal to the roof covering. If the kerb is rotten or too low, we rebuild it and patch the covering around it rather than stripping the whole roof. This is checked at the survey and included in the written quote, so you know the full scope first.

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

Rooflight fitting in Falmouth

Send your postcode, photos and what needs fitting. One fixed written price before anything starts.

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