Skylight repairs & leak fixes in Dulwich: what is involved?
For Dulwich homes and buildings we offer skylight repairs & leak fixes: leak tracing, resealing, actuator repairs and glass replacement. We measure first, specify to the opening and confirm any planning or building-control points before quoting.
Victorian and Edwardian terraces with narrow side returns are typical of much of London, and a glass roof or long flat rooflight is the usual way to keep the back rooms bright once the return is built over. Think of skylight repairs & leak fixes for leaks, condensation, misted units and failed actuators.
Jobs in Dulwich are planned around access: whether the roof can be reached from the garden, whether a hoist or crane is needed, and where we can park. We check this when we measure.
Options we can specify in Dulwich
- Upstand and membrane repairs
- Resealing and re-flashing
- Glass unit replacement
- Condensation diagnosis
- Planned maintenance visits
- Leak tracing, not guesswork
- Misted unit replacement
What to check first
- Commercial roofs need access and fall protection
- Repairs are charged — the free survey applies to new installations
Planning, building control and Dulwich
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.
See our building regulations guide for U-values, glazing limits and self-certification.
Guide prices for Dulwich
Guide prices for skylight repairs & leak fixes in Dulwich 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 Dulwich address.
- Survey. We measure the opening, check the roof build-up and agree the options.
- Fixed quote. Product, work and price in writing — nothing is ordered until you agree.
- Fit and make good. We fit, seal, test and finish the reveal, then hand over the paperwork.
Skylight repairs & leak fixes near Dulwich
Other services in Dulwich
Skylight repairs & leak fixes in Dulwich: questions
Do you repair roof windows too?
Yes — flashings, seals, hinges and glass on pitched roof windows.
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.
Can you repair an electric rooflight that will not open?
Often, yes — actuators, controllers and rain sensors can be replaced if parts are available.
Can you work alongside my builder in Dulwich?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
Do you offer skylight repairs & leak fixes in Dulwich?
Yes. We carry out skylight repairs & leak fixes in Dulwich and across Greater London. Send your postcode and we will offer a survey date when we reply.
