How we approach skylight replacement in Carrickfergus
Our skylight replacement service in Carrickfergus covers replacing tired domes and failed glass with a modern rooflight. Every job starts with a survey of the opening, the roof covering and the room below, and a fixed written price.
Conservation areas and listed buildings in Northern Ireland are excluded from householder permitted development, so we check before quoting. In Carrickfergus, as anywhere, skylight replacement is the usual choice for yellowed domes, misted glass and leaking roof windows.
From Carrickfergus to Newtownabbey, Bangor, County Down and Belfast, the same survey-first process applies: measure, specify, fix the price, then fit.
Specification options
- Misted glass unit replacement only
- Like-for-like size replacement
- Dome to flat glass upgrade
- Fixed to electric opening
- Upstand rebuild and insulation
- Often reuses the existing opening
- Cures most chronic leaks
What to check first
- Enlarging the opening changes the structure and may need approval
- Upstand and roof condition decide the scope
Planning, building control and Carrickfergus
In Northern Ireland, roof alterations come under Class B of the 2015 order: a rooflight facing a road must not project more than 15 cm and must sit at least 0.5 m from the ridge, eaves, verge and party wall. Listed buildings also need listed building consent from the council.
Northern Ireland's energy rules assess rooflight U-values in the vertical position — unlike England and Wales — and expect 1.6 W/m²K or Band C for replacements. 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.
Skylight replacement prices in Carrickfergus
These are typical supply-and-fit ranges. For an address in Carrickfergus, 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 |
|---|---|---|
| Replacement with upstand rebuild and opening unit | £2,995 – £4,795 | £2,495 – £3,995 |
| Dome to flat glass upgrade Typical | £1,915 – £2,995 | £1,595 – £2,495 |
| Like-for-like glass rooflight | £1,555 – £2,155 | £1,295 – £1,795 |
From enquiry to finished job
- Send the details. Postcode, rough size and a photo of the roof and room.
- Survey. We measure the opening, check the roof build-up and agree the options.
- Agree the quote. You approve the specification and price before anything is ordered.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Skylight replacement near Carrickfergus
Other services in Carrickfergus
Skylight replacement in Carrickfergus: questions
Do I need building regulations approval to replace a rooflight?
Replacements in existing homes generally need to meet current thermal standards and may need notification or approval. We advise on the route for your job.
Can you replace only the misted glass?
Sometimes, if the frame is sound and the maker supplies replacement units. Often a complete new rooflight costs little more and performs better.
Can I go bigger when replacing?
Possibly. Enlarging the opening means trimming joists, so we check the structure first.
Will I need planning permission in Carrickfergus?
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.
How do I book a survey in Carrickfergus?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
