Skylight repairs & leak fixes in Balham: what is involved?
Skylight repairs & leak fixes in Balham means leak tracing, resealing, actuator repairs and glass replacement. We cover the SW12 district and the rest of Greater London, with a survey before any price is fixed.
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. Skylight repairs & leak fixes suit leaks, condensation, misted units and failed actuators.
Jobs in Balham 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.
What you can choose
- Condensation diagnosis
- Actuator, motor and control repairs
- Upstand and membrane repairs
- Planned maintenance visits
- Glass unit replacement
- Honest repair-or-replace advice
- Storm and impact damage
Things we check at survey
- Parts availability varies with the age of the unit
- Commercial roofs need access and fall protection
Do you need permission in Balham?
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.
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.
Our planning guide covers each nation in more detail.
Guide prices for Balham
Prices below are shown including and excluding VAT. In Balham, 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 |
The process, step by step
- Tell us what you have. Send the SW12 postcode, a rough size and a couple of photos.
- Survey. We measure the opening, check the roof build-up and agree the options.
- Written price. You receive a fixed price listing the unit, the work and the lead time.
- Fit and make good. We fit, seal, test and finish the reveal, then hand over the paperwork.
Neighbouring towns
Related work in Balham
Skylight repairs & leak fixes in Balham: questions
Do you repair roof windows too?
Yes — flashings, seals, hinges and glass on pitched roof windows.
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.
Can you repair an electric rooflight that will not open?
Often, yes — actuators, controllers and rain sensors can be replaced if parts are available.
Do you offer skylight repairs & leak fixes in Balham?
Yes. We carry out skylight repairs & leak fixes in Balham and across Greater London. Send your postcode and we will offer a survey date when we reply.
How do I book a survey in Balham?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
