Skylight repairs & leak fixes in County Londonderry: the essentials
Across County Londonderry, our skylight repairs & leak fixes work covers leak tracing, resealing, actuator repairs and glass replacement. Survey first, fixed price second, fitting third.
Conservation areas and listed buildings in Northern Ireland are excluded from householder permitted development, so we check before quoting. Wind and rain off the Atlantic make upstand and flashing details important on Northern Irish roofs.
Towns in County Londonderry
What you can choose
- Upstand and membrane repairs
- Resealing and re-flashing
- Condensation diagnosis
- Actuator, motor and control repairs
- Glass unit replacement
- Actuator and rain-sensor repairs
- Leak tracing, not guesswork
Planning and building rules in Northern Ireland
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. 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.
Skylight repairs & leak fixes prices in County Londonderry
Prices below are shown including and excluding VAT. In County Londonderry, as elsewhere, making good inside and access equipment are the main variables.
| 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
- Tell us about the roof. Send the postcode, rough sizes and a photo or two through the form, WhatsApp or the guide-price tool.
- Free survey. For new installations a surveyor measures the opening, checks the roof build-up and talks through glass and options.
- Fixed written quote. You get the product, the work and the price in writing. Nothing is ordered or paid for until you agree.
- Fitting and handover. We fit, seal and make good, then hand over product data, warranties and any certificate paperwork.
Repairs & leaks in nearby areas
Common questions
Do you charge for repair visits?
Yes, repairs are charged. We give the price before the visit.
Do you repair roof windows too?
Yes — flashings, seals, hinges and glass on pitched roof windows.
Can you repair an electric rooflight that will not open?
Often, yes — actuators, controllers and rain sensors can be replaced if parts are available.
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.
Will I need planning permission in County Londonderry?
Most rooflights on houses in Northern Ireland are permitted development under Class B, but not in a conservation area or on a listed building's curtilage.
