How we approach skylight repairs & leak fixes in Sidcup
We handle skylight repairs & leak fixes across Greater London, including Sidcup. In short: leak tracing, resealing, actuator repairs and glass replacement. The survey checks structure, weathering and orientation, so the quote reflects your actual roof.
London homes often run deep from front to back, so the middle of the ground floor is the darkest space — exactly where an overhead rooflight earns its keep. Think of skylight repairs & leak fixes for rooflights that have stopped opening or started dripping.
Sidcup sits about 4 km from Bexley and 4 km from Welling, and we cover the whole DA14 postcode district and the roads in between.
What you can choose
- Condensation diagnosis
- Actuator, motor and control repairs
- Resealing and re-flashing
- Planned maintenance visits
- Glass unit replacement
- Honest repair-or-replace advice
- Leak tracing, not guesswork
Before you order: points to check
- Repairs are charged — the free survey applies to new installations
- Parts availability varies with the age of the unit
Consents for skylight repairs & leak fixes in Sidcup
In England a rooflight on a house is usually permitted development under Class C if it projects no more than 150 mm beyond the roof slope and sits no higher than the ridge. Listed buildings need listed building consent, flats have no householder permitted development rights, and an Article 4 direction can remove the rights in some conservation areas.
Under Approved Document L, a rooflight added to an English home must achieve at least 2.2 W/m²K (horizontal plane), and a roof window 1.4 W/m²K or Window Energy Rating Band B. Replacing a rooflight or roof window can be self-certified by an installer registered with an authorised competent person scheme; otherwise building control approval is needed.
Our planning guide covers each nation in more detail.
Guide prices for Sidcup
These are typical supply-and-fit ranges. For an address in Sidcup, 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 Sidcup address.
- Measure and check. A surveyor visits Sidcup, 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.
Neighbouring towns
Other services in Sidcup
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.
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.
How do I book a survey in Sidcup?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
Can you work alongside my builder in Sidcup?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
