What do skylight repairs & leak fixes in London involve?
Our skylight repairs & leak fixes service in London covers leak tracing, resealing, actuator repairs and glass replacement. Every job starts with a survey of the opening, the roof covering and the room below, and a fixed written price.
Party walls are a fact of life in London terraces, and rooflights close to a shared wall need detailing that keeps the neighbour's side dry too. Typical uses for skylight repairs & leak fixes include rooflights that have stopped opening or started dripping.
London is the main town we list in Greater London; we also cover nearby Pimlico and Islington.
Options we can specify in London
- Upstand and membrane repairs
- Resealing and re-flashing
- Glass unit replacement
- Condensation diagnosis
- Actuator, motor and control repairs
- Misted unit replacement
- Honest repair-or-replace advice
What to check first
- Water tracking can show up far from the source
- Commercial roofs need access and fall protection
Consents for skylight repairs & leak fixes in London
Most rooflights on English houses do not need planning permission, provided they keep within 150 mm of the roof surface and below the ridge line. A rooflight on a side-facing slope must be obscure-glazed, and fixed shut unless the opening part is more than 1.7 m above the floor.
Building Regulations Approved Document L sets a limiting U-value of 2.2 W/m²K for new or replacement rooflights in existing homes, measured in the horizontal plane; roof windows need 1.4 W/m²K or a Band B energy rating. The Future Homes and Buildings Standards, published in March 2026, apply from 24 March 2027 and keep the 2.2 W/m²K limit for rooflights.
Read the planning permission guide before you commit to a design.
Guide prices for London
Prices below are shown including and excluding VAT. In London, 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
- Send the details. Postcode, rough size and a photo of the roof and room.
- Measure and check. A surveyor visits London, measures and checks structure and access.
- Agree the quote. You approve the specification and price before anything is ordered.
- Fit and make good. We fit, seal, test and finish the reveal, then hand over the paperwork.
Skylight repairs & leak fixes near London
Other services in London
Common 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.
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 work alongside my builder in London?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
Do I need to be at home for the survey in London?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
