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Greater London · SW1P

Leak investigation and inspection in Westminster

Got a leak nobody has managed to find in Westminster? We find exactly where water is getting in, water-testing where needed, and put it in writing. Send photos for a free guide price — you'll get a fixed price in writing before any work starts.

Get a guide priceCall 0800 088 6248

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

Surveyor on a step ladder inspecting the eaves of a roof lantern with a torch and moisture meter

Signs you need leak investigation and inspection

  • Previous repairs haven't stopped the leak
  • You're not sure if it's a leak or condensation
  • You need a written report for a landlord, insurer or builder

Why it happens

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.

Covering Westminster and nearby

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.

London's extensions are often tight to neighbouring walls and roofs. Where a repair needs access over a neighbour's property, we'll tell you in advance so you can arrange it.

Neighbouring places we cover include Pimlico (1 mile), Chelsea (2 miles), Battersea (2 miles).

How much should it cost?

Guide price, per visit£145–£295 ex VAT£174–£354 inc VAT

Guide price for leak investigation and inspection: £145–£295 ex VAT (£174–£354 inc 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?

Straightforward repairs — resealing, gaskets, cappings, eaves and like-for-like parts — don't normally need building regulations approval in England. Replacing the whole lantern or enlarging the opening is different and falls under the Building Regulations 2010; we confirm in writing which route applies before any replacement. 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?

  1. Send photosWhatsApp or upload a few photos and tell us when it leaks.
  2. Guide priceWe reply with a guide price and whether a visit is needed.
  3. Fixed price in writingYou approve the price and the date before anything starts.
  4. Repair and testWe fix what's failed, water-test where it matters, and send photos.

Leak investigation and inspection in Westminster: questions

How do I get a price for leak investigation and inspection in Westminster?

Send a few photos of the lantern and the problem, with your Westminster postcode. We'll reply with a guide price and tell you whether a visit is needed before we can fix the price.

Can you repair a lantern someone else installed in Westminster?

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 Westminster

Leak investigation and inspection near Westminster

More about leak investigation and inspection · All roof lantern repairs in Westminster

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