Skylight repairs & leak fixes in Sunbury-on-Thames: what is involved?
Thinking about skylight repairs & leak fixes in Sunbury-on-Thames? The short answer: leak tracing, resealing, actuator repairs and glass replacement. The longer answer depends on your roof, which is why we survey before we price.
Across the South East, single-storey kitchen extensions on 1930s semis and post-war detached houses are where most flat rooflights and lanterns go. In Sunbury-on-Thames, as anywhere, skylight repairs & leak fixes are the usual choice for leaks, condensation, misted units and failed actuators.
We work across Surrey, including Sunbury-on-Thames, and in neighbouring towns such as Walton-on-Thames and Hampton. Access, parking and how the glass reaches the roof are all checked at the survey.
What you can choose
- Glass unit replacement
- Planned maintenance visits
- Resealing and re-flashing
- Upstand and membrane repairs
- Actuator, motor and control repairs
- Leak tracing, not guesswork
- Misted unit replacement
What to check first
- Water tracking can show up far from the source
- Parts availability varies with the age of the unit
Planning and building rules for Sunbury-on-Thames
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. 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.
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.
Read the planning permission guide before you commit to a design.
What do skylight repairs & leak fixes cost in Sunbury-on-Thames?
Prices below are shown including and excluding VAT. In Sunbury-on-Thames, 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 |
From enquiry to finished job
- Tell us what you have. Send the TW16 postcode, a rough size and a couple of photos.
- Measure and check. A surveyor visits Sunbury-on-Thames, measures and checks structure and access.
- 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.
Nearby towns
Related work in Sunbury-on-Thames
Common questions
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.
Do you repair roof windows too?
Yes — flashings, seals, hinges and glass on pitched roof windows.
Do you offer skylight repairs & leak fixes in Sunbury-on-Thames?
Yes. We carry out skylight repairs & leak fixes in Sunbury-on-Thames and across Surrey. Send your postcode and we will offer a survey date when we reply.
Can you work alongside my builder in Sunbury-on-Thames?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
