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RooflightInstallers.co.uk
County Down · Northern Ireland

Conservation rooflight installation in County Down

Across County Down we fit conservation rooflights for homeowners, builders, roofers and commercial clients. The trade side matters: an extension company with jobs running in several of the 4 towns we list does not want to coordinate a different fitter for each. We can take the rooflight element of every site, fitted to the maker's instructions and left ready for the next trade. Domestic customers get the same fitting standard, quoted in writing before work begins.

Guide prices in County Down

Small conservation unit

£1,145 – £1,695including VAT at 20%

Low-profile unit with glazing bar, slate or tile flashing

Medium unit

£1,695 – £2,495including VAT at 20%

Larger opening, lead or matching flashings

Large or bespoke

£2,495 – £3,845including VAT at 20%

Larger or made-to-order units for listed or sensitive roofs

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.

Towns we list in County Down

From the larger towns to the smaller places in between, we take on rooflight fitting across County Down. The process is the same for a terrace, a farmhouse extension or an industrial unit: details first, written quote second, fitting day third. Remote and island addresses in Northern Ireland, where they arise, are covered by arrangement, and we tell you that before quoting.

Included in the work

  • Flashings in lead or a matching kit, dressed to the covering
  • Slates or tiles lifted carefully and kept for reuse where possible
  • Slates or tiles made good around the frame with tidy cuts
  • Glazing bar and frame detail — We check whether the council has asked for particular details, such as a central glazing bar or a dark frame colour.
  • Listed building consent — We confirm listed building consent is in place before fitting any rooflight on a listed building.

Rules that apply in Northern Ireland

Northern Ireland has its own rules. Permitted development for rooflights on a house requires the unit to sit below the highest part of the roof, project no more than 15 cm where the slope faces a road, and stay at least half a metre from the ridge, eaves, party wall and verge. It doesn't apply in conservation areas or within the grounds of a listed building. For building control, structural roof alterations need an application, and rooflights must meet WER Band C or 1.6 W/m²K.

Common questions in County Down

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 conservation 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.

Do you make good inside after fitting?

Yes, where the quote includes it. Internal finishing usually means lining the reveal with plasterboard, taping or skimming, and fitting trim where it meets the ceiling. Some people prefer their own plasterer or decorator to finish off, which is fine. The written quote spells out exactly where our work stops, so nobody is left guessing about who does what once the unit is in.

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

Fitting in County Down

Send photos and rough sizes, or ask for a survey visit for install work. You get one fixed written price before anything starts.

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