In Feltham, as everywhere, some leaks are obvious; many aren't. Send photos and we'll tell you what we think has failed.

Is it time for leak investigation and inspection?
- Previous repairs haven't stopped the leak
- The leak moves around or is intermittent
- You're not sure if it's a leak or condensation
What usually causes it?
Hidden water paths
Water can travel along bars, decks and linings before it shows.
More than one fault
Older lanterns often have two or three small failures.
Roof lanterns in Feltham
Sun and UV do more damage than rain on many lanterns here: brittle ridge caps, chalky finishes and hardened gaskets. They're cheap to replace before they let water in.
Across London, many lanterns sit on rear extensions with access only through the house, so we protect floors and plan the work to keep time indoors to a minimum. Parking and any permits are factored into the quote.
We cover Feltham as part of Greater London, about 12 miles from Westminster.
We also cover nearby Hanworth (2 miles), Ashford, Surrey (2 miles), Hounslow (3 miles).
How much should it cost?
Most leak investigation and inspection jobs come in between £145 and £295 ex VAT (£174–£354 including VAT), per visit. Towers or scaffold, where needed, are priced into the quote. Your fixed price is confirmed in writing before any work starts.
Do you need permission in England?
Most lantern repairs in England need no approval at all. Where a job turns into a replacement, the Building Regulations 2010 apply and we confirm how the work will be signed off before we start. Listed buildings need listed building consent from the local council for alterations, and conservation areas can have extra controls; like-for-like repairs are treated differently from changes, so check with the council's conservation officer first.
How does it work?
- Send photosWhatsApp or upload a few photos and tell us when it leaks.
- Guide priceWe reply with a guide price and whether a visit is needed.
- Fixed price in writingYou approve the price and the date before anything starts.
- Repair and testWe fix what's failed, water-test where it matters, and send photos.
Leak investigation and inspection in Feltham: questions
How do I get a price for leak investigation and inspection in Feltham?
Send a few photos of the lantern and the problem, with your Feltham postcode. We'll reply with a guide price and tell you whether a visit is needed before we can fix the price.
Do you need to visit to price leak investigation and inspection?
Not always. Clear photos are often enough for a guide price. Where the cause isn't obvious, a visit to inspect and water-test is charged from £145 ex VAT, confirmed before we come.
What does a leak investigation cost?
Visits start from £145 ex VAT, up to around £295 for larger lanterns or longer water tests. The cost and what's included are confirmed in writing before we visit.
Is the visit cost deducted from the repair?
Ask when you book — we'll confirm in writing how the visit is charged if you go ahead with the repair.
Other lantern repairs in Feltham
- Roof lantern resealing in Feltham
- Glazing bar and capping repairs in Feltham
- Slipped glass panel repairs in Feltham
- Condensation diagnosis and fixes in Feltham
- uPVC roof lantern repairs in Feltham
- Flat rooflight and skylight repairs in Feltham
Leak investigation and inspection near Feltham
More about leak investigation and inspection · All roof lantern repairs in Feltham