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RooflightInstallers.co.uk
Castlereagh · BT6 · County Antrim

Conservation rooflight installation in Castlereagh

Conservation rooflight installation in Castlereagh comes down to what happens around the glass. A good unit sat on a poor upstand, or with the membrane or flashing cut short at the corners, will still let water in. We fit each conservation rooflight to the maker's instructions for fixings, packers and sealant, for homes and businesses across Castlereagh and the rest of County Antrim. That covers supply and fit, fit-only for a unit you already own, and swapping out a tired one. Every job starts with a written quote, so the price and scope are clear before anyone climbs a ladder.

Guide price from £1,145 · Supply & fit

Guide prices

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.

Covering BT6 and neighbouring districts

Jobs across BT6, BT5 and BT7 are part of our normal cover for Castlereagh. We are not an office on the high street. Our fitting teams come out to the property from wherever they are working that week. Neighbouring places such as Belfast and Newtownabbey are covered on the same terms, so a house on the edge of town is no harder to book than one in the centre.

What we check on a supplied unit

A damaged delivery is a frequent snag on fit-only work. Before the day, unpack a conservation rooflight, photograph it, and tell the seller about any cracks or scuffs, because claims are much easier made early. We will also ask for the model or a link, so we can read the maker's instructions and check the opening size and the flashing kit it expects. If everything lines up, we fit it. If not, we explain what needs changing first.

What we do on the day

  • Rafters trimmed with timbers that suit the existing roof
  • Rooflight set low so it sits close to the line of the roof
  • Slates or tiles lifted carefully and kept for reuse where possible
  • Energy and old roofs — We make sure the rooflight meets current energy rules while suiting an older roof build-up.
  • Conservation area rules by nation — We check the permitted development position for your nation before the rooflight is ordered.

Fitting your conservation rooflight, step by step

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

Regulations for Castlereagh properties

For a home in Northern Ireland, check planning first: rooflights are excluded from permitted development in conservation areas and within the curtilage of listed buildings, and elsewhere must keep 0.5 m clear of the ridge, eaves and verges. Then building control: a new opening alters the roof structure, so expect a building control application and confirm with your council, and the glazing must achieve WER Band C or 1.6 W/m²K. We check both for your address before quoting.

Details that speed up your 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, BT6 or nearby, confirms travel.

Common questions in Castlereagh

Does a rooflight need building control approval?

In Northern Ireland a new opening alters the roof structure, so expect a building control application; confirm the position with your council, including for replacements. The new rooflight must meet WER Band C or 1.6 W/m²K. We confirm what applies before you commit.

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.

Do I need planning permission for a rooflight in Castlereagh?

Often not. Many rooflights fall under permitted development, provided they do not project beyond the national limit and meet the other conditions that apply in Northern Ireland. Conservation areas, listed buildings and some flats are different and may need consent. Because the rules depend on the property, we confirm what is likely to apply at your address and point you to the planning authority where an application is needed.

Got a unit waiting to go in, or need one sourced? Either way, start with your Castlereagh address and a couple of photos.

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

Conservation rooflights in Castlereagh

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

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