Skylight repairs & leak fixes for Belfast: the essentials
Skylight repairs & leak fixes in Belfast means leak tracing, resealing, actuator repairs and glass replacement. We cover the BT1 district and the rest of County Antrim, 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. Typical uses for skylight repairs & leak fixes include leaks, condensation, misted units and failed actuators.
Belfast is the main town we list in County Antrim; we also cover nearby Castlereagh and Newtownabbey.
Choices for your Belfast project
- Condensation diagnosis
- Glass unit replacement
- Planned maintenance visits
- Actuator, motor and control repairs
- Upstand and membrane repairs
- Leak tracing, not guesswork
- Misted unit replacement
What to check first
- Repairs are charged — the free survey applies to new installations
- Commercial roofs need access and fall protection
Planning and building rules for Belfast
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. Extensions follow a 25% glazing allowance in Technical Booklet F1.
See our building regulations guide for U-values, glazing limits and self-certification.
Guide prices for Belfast
Guide prices for skylight repairs & leak fixes in Belfast are the same as anywhere we work — what changes the price is the job: access, structure, scaffold and finishing.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Glass unit or actuator replacement | £595 – £1,555 | £495 – £1,295 |
| Upstand or membrane repair Typical | £355 – £955 | £295 – £795 |
| Diagnostic visit and reseal | £235 – £475 | £195 – £395 |
How the job runs
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Belfast address.
- Free site visit. For new installs we survey free, measure and confirm the roof detail.
- Written price. You receive a fixed price listing the unit, the work and the lead time.
- Fitting and handover. We install, clean down and leave product and warranty documents.
Nearby towns
Other services in Belfast
Skylight repairs & leak fixes in Belfast: questions
Can you fix a misted rooflight?
A misted unit means the glass seal has failed. The sealed unit, or the whole rooflight, needs replacing.
Why is my skylight leaking?
Common causes are a failed seal, a membrane that has split or lifted at the upstand, a low upstand, blocked drainage or condensation mistaken for a leak.
Is it condensation or a leak?
Condensation forms on the inside face on cold days and comes back in the same pattern. A leak appears when it rains and often tracks down the reveal.
Do you offer skylight repairs & leak fixes in Belfast?
Yes. We carry out skylight repairs & leak fixes in Belfast and across County Antrim. Send your postcode and we will offer a survey date when we reply.
How do I book a survey in Belfast?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
