We carry out leak investigation and inspection in Welling and across the DA16 area. Some leaks are obvious; many aren't.

What you might be seeing
- Previous repairs haven't stopped the leak
- The leak moves around or is intermittent
- You need a written report for a landlord, insurer or builder
Why it happens
More than one fault
Older lanterns often have two or three small failures.
Not the lantern
Sometimes the source is the flat roof, a parapet, a gutter or a wall above.
Roof lanterns in Welling
Even in drier areas, one heavy downpour with blocked eaves is enough to overflow a lantern indoors. Clearing the eaves channel is the simplest prevention there is.
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.
Welling is around 11 miles from Westminster, and both are within our Greater London coverage.
Neighbouring places we cover include Bexley (2 miles), Eltham (3 miles), Thamesmead (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 Welling: questions
Do you cover Welling?
Yes. We cover Welling, including the DA16 postcode area, as part of Greater London. Send photos by WhatsApp or the form for a free guide price, and we'll confirm the fixed price in writing before any work starts.
Can you repair a lantern someone else installed in Welling?
Yes. We repair lanterns whoever fitted them. If yours is still under the installer's warranty, contact them first so you don't affect it.
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.
Do you provide a report?
Yes, with photos and findings, which is useful for landlords, insurers and disputes with installers.
Other lantern repairs in Welling
- Glazing bar and capping repairs in Welling
- Flat roof junction and flashing repairs in Welling
- Timber roof lantern repairs in Welling
- uPVC roof lantern repairs in Welling
- Opening vent and actuator repairs in Welling
- Roof lantern respraying in Welling
Leak investigation and inspection near Welling
More about leak investigation and inspection · All roof lantern repairs in Welling