Skylight repairs & leak fixes for Harrow: the essentials
We handle skylight repairs & leak fixes across Greater London, including Harrow. In short: leak tracing, resealing, actuator repairs and glass replacement. The survey checks structure, weathering and orientation, so the quote reflects your actual roof.
Many London roofs are reached only through the house or over neighbouring property, so lifting heavy glass is planned at survey rather than on the day. Typical uses for skylight repairs & leak fixes include rooflights that have stopped opening or started dripping.
From Harrow to Wembley, Northolt and Greenford, the same survey-first process applies: measure, specify, fix the price, then fit.
Choices for your Harrow project
- Upstand and membrane repairs
- Glass unit replacement
- Resealing and re-flashing
- Planned maintenance visits
- Condensation diagnosis
- Storm and impact damage
- Leak tracing, not guesswork
Things we check at survey
- Repairs are charged — the free survey applies to new installations
- Commercial roofs need access and fall protection
Planning, building control and Harrow
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.
For English homes the energy rules ask for rooflights of 2.2 W/m²K or better and roof windows of 1.4 W/m²K (or WER Band B); most modern double glazed units meet both. 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 Harrow
The ranges below are typical for straightforward jobs; your fixed price follows a survey of your roof.
| 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 HA2 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.
Nearby towns
More we do in Harrow
Skylight repairs & leak fixes in Harrow: questions
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.
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.
Do I need to be at home for the survey in Harrow?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
Do you offer skylight repairs & leak fixes in Harrow?
Yes. We carry out skylight repairs & leak fixes in Harrow and across Greater London. Send your postcode and we will offer a survey date when we reply.
