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RooflightInstallers.co.uk
County Antrim · BT1, BT2, BT7, BT12

Rooflight installers in Belfast

Maybe the extension is nearly finished and the rooflight is still in its crate. Maybe the old dome on the kitchen roof has started to drip. Maybe you want daylight on a dark landing and wonder whether the roof can take a new opening. These are the kinds of job we take on in Belfast and across County Antrim: fit-only, replacement, new openings, roof lanterns and pitched roof windows. Builders and roofers can also bring us in for the rooflight part of a larger project, with the scope and price agreed in writing.

Fitting jobs in Belfast

Fitting & replacement

Flat roof rooflights

Pitched roofs & lofts

Commercial & trade

Why use a rooflight fitting specialist

Water has to go somewhere. Around a rooflight, the roof falls should carry it away from the kerb, not towards it. The glass itself needs enough pitch to shed rain and stop dirt settling. Condensation needs a path out of the frame. Get any of this wrong and the result is ponding, staining or drips months later. A specialist fitter checks these details as a matter of course, because they are the difference between a rooflight that works and one that turns into a repair job.

Covering Belfast and surrounding areas

Covering Belfast properly means covering the whole of it, house or business unit, across BT1, BT2 and BT7. Beyond the town, we take on jobs in Castlereagh (2 miles) and Newtownabbey (4 miles) as standard. Each one gets the same survey or photo-based pricing, the same written quote, and the same fitting standard.

Do you need permission in Belfast?

In Northern Ireland, the energy standard for a new or replacement rooflight or roof window in an existing home is WER Band C or a U-value of 1.6 W/m²K, under Technical Booklet F1. Cutting a new opening alters the roof structure, so a building control application is expected; confirm with the council's building control team. Planning permitted development covers many rooflights on houses if they stay below the ridge, project no more than 15 cm on a road-facing slope and sit at least 0.5 m from the ridge, eaves and verges.

Questions about rooflight fitting in Belfast

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 Belfast

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

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