Skylight repairs & leak fixes for Derry/Londonderry: the essentials
We handle skylight repairs & leak fixes across County Londonderry, including Derry/Londonderry. In short: leak tracing, resealing, actuator repairs and glass replacement. The survey checks structure, weathering and orientation, so the quote reflects your actual roof.
Conservation areas and listed buildings in Northern Ireland are excluded from householder permitted development, so we check before quoting. Typical uses for skylight repairs & leak fixes include leaks, condensation, misted units and failed actuators.
We cover all of Derry/Londonderry and the BT48 district, and nearby Strabane and Limavady.
Choices for your Derry/Londonderry project
- Planned maintenance visits
- Resealing and re-flashing
- Actuator, motor and control repairs
- Upstand and membrane repairs
- Glass unit replacement
- Storm and impact damage
- Actuator and rain-sensor repairs
Things we check at survey
- Repairs are charged — the free survey applies to new installations
- Commercial roofs need access and fall protection
Consents for skylight repairs & leak fixes in Derry/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. 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.
See our building regulations guide for U-values, glazing limits and self-certification.
Guide prices for Derry/Londonderry
These are typical supply-and-fit ranges. For an address in Derry/Londonderry, 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 |
|---|---|---|
| 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 |
What happens next
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Derry/Londonderry address.
- Measure and check. A surveyor visits Derry/Londonderry, measures and checks structure and access.
- Written price. You receive a fixed price listing the unit, the work and the lead time.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Neighbouring towns
More we do in Derry/Londonderry
Questions about skylight repairs & leak fixes in Derry/Londonderry
Do you charge for repair visits?
Yes, repairs are charged. We give the price before the visit.
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.
Do you offer skylight repairs & leak fixes in Derry/Londonderry?
Yes. We carry out skylight repairs & leak fixes in Derry/Londonderry and across County Londonderry. Send your postcode and we will offer a survey date when we reply.
Do I need to be at home for the survey in Derry/Londonderry?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
