Flat rooflights in Coleraine: what is involved?
Flat rooflights in Coleraine means fixed double or triple glazed rooflights for flat roofs and extensions. We cover the BT51 district and the rest of County Londonderry, with a survey before any price is fixed.
Many Northern Irish homes have later flat-roofed kitchen extensions where an old dome can be swapped for glass. Think of flat rooflights for landings, bathrooms and rear extensions with flat roofs.
Coleraine is around 44 km from Derry/Londonderry, and we survey and fit throughout that part of County Londonderry, including the BT51 district.
Options we can specify in Coleraine
- Integral or fitted blinds
- Rain sensor if paired with an opening unit
- Insulated kerb or timber upstand built to suit
- Plastered or lined internal reveal
- Square, rectangular or long-format sizes
- Fixed units are simple, quiet and low-maintenance
- Pairs with an opening unit where you also need ventilation
Things we check at survey
- New openings in an existing roof need a structural check on joists
- Needs a properly formed upstand — usually at least 150 mm above the finished roof surface (check the manufacturer's figure)
Consents for flat rooflights in Coleraine
Northern Ireland's householder permitted development allows rooflights within limits — no more than 15 cm projection on road-facing slopes and a 0.5 m margin from ridge, eaves and party walls. A side-facing window within 15 m of a neighbouring boundary must be obscure-glazed, and non-opening unless the opening part is more than 1.7 m above the floor.
For homes in Northern Ireland, Technical Booklet F1 sets 1.6 W/m²K (or WER Band C) for replacement glazing including rooflights. New dwellings must average 1.40 W/m²K across windows, roof windows and rooflights.
Read the planning permission guide before you commit to a design.
Guide prices for Coleraine
These are typical supply-and-fit ranges. For an address in Coleraine, scaffold, a hoist for heavy glass, or a new structural opening can move the figure, which is why we survey first.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Large or triple glazed (1500 × 2500 mm and up) | £2,395 – £4,195 | £1,995 – £3,495 |
| Mid-size double glazed (1000 × 2000 mm) Typical | £1,675 – £2,395 | £1,395 – £1,995 |
| Small double glazed (up to 1000 × 1000 mm) | £1,195 – £1,795 | £995 – £1,495 |
How the job runs
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Coleraine address.
- Free site visit. For new installs we survey free, measure and confirm the roof detail.
- Fixed quote. Product, work and price in writing — nothing is ordered until you agree.
- Fit and make good. We fit, seal, test and finish the reveal, then hand over the paperwork.
Nearby towns
More we do in Coleraine
Common questions
Double or triple glazing?
Double glazing suits most domestic jobs. Triple glazing improves thermal performance and cuts noise from rain, which is worth it over bedrooms or where the energy calculation is tight.
How long does it take?
Fitting into a prepared upstand usually takes a day. Forming a new opening in an existing roof, including making good inside, is often two to three days.
Will it make the room too hot?
A big unglazed-to-sky area can add solar gain in summer. Solar-control glass, a blind, or pairing a fixed unit with an opening one keeps it comfortable.
Is the survey in Coleraine free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
How do I book a survey in Coleraine?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
