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RooflightInstallers.co.uk
County Down · Northern Ireland

Rooflight upstands & kerbs in County Down

We cover 16 postcode districts across County Down, and we fit rooflight upstands in all of them. The work itself does not change from one district to the next. A rooflight upstand still needs a correctly sized opening, an upstand or flashing to suit the roof, and sealing that matches the covering. What does change is access: terraced streets, long gardens, steep pitches, tight parking. We price that honestly in the written quote rather than averaging it out across every job.

Guide prices in County Down

Timber upstand

£245 – £445including VAT at 20%

Treated timber kerb built square and level to the maker's size

Insulated upstand

£445 – £845including VAT at 20%

Kerb with insulation and the roof membrane turned up and dressed

Large or with trimming

£845 – £1,445including VAT at 20%

Bigger kerbs or where joists need trimming first

Guide ranges for labour and materials, rooflight not included. 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

Builders and roofers working in County Down can use us for the rooflight element of a job, wherever the site is in Northern Ireland. Homeowners can book us directly. In both cases the fitters come to the address, the work follows the maker's instructions, and a written quote fixes the price first. Fitting is carried out by vetted teams under S&K's direction.

Included in the work

  • Insulation fitted to the upstand faces to limit heat loss
  • Height set above the finished roof to the maker's stated minimum
  • Roof membrane turned up, bonded and finished at the kerb top
  • Height above the finished roof — We set the upstand so it stands at least 150 mm above the finished roof, measured from the top of any ballast, paving or walkway.
  • Energy limit for site-built kerbs — We insulate the kerb to what building control in Northern Ireland expects; England and Wales set 0.35 W/m²K for site-built upstands.

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

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.

What is included in the price?

The written quote lists it line by line. Typically that covers fitting labour, fixings, sealants, membrane or flashing materials, any upstand work, internal finishing if agreed, and taking away the waste. For supply and fit, the unit itself is included too. Scaffold, lifting gear and any third-party fees, where needed, are shown separately so you can see what each part of the job costs.

Do you cover County Down?

Yes. Fitters travel to addresses in County Down and the surrounding districts, including BT postcodes. We do not run an office there; the survey and the fitting happen at your property. A few island and remote postcodes are covered by arrangement; if yours is one, we confirm travel and dates before quoting.

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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