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Northern Ireland · County Londonderry

Leak investigation and inspection in County Londonderry

We provide leak investigation and inspection across County Londonderry, from Derry~Londonderry, Coleraine, Limavady. We find exactly where water is getting in, water-testing where needed, and put it in writing, and you get a fixed price in writing before any work starts.

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Some leaks are obvious; many aren't. We carry out leak investigation and inspection across County Londonderry, with a guide price from your photos and a fixed price in writing before any work starts.

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

  • The leak moves around or is intermittent
  • You're not sure if it's a leak or condensation
  • You need a written report for a landlord, insurer or builder

What usually causes it?

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 County Londonderry

Damp, mild winters keep moss and algae growing on flat roofs and lantern frames, which holds water against seals and blocks weep slots. Regular clearing makes a real difference in wetter areas.

What should you expect to pay for leak investigation and inspection in County Londonderry?

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 Northern Ireland?

Most lantern repairs in Northern Ireland need no approval at all. Where a job turns into a replacement, the Building Regulations (Northern Ireland) 2012 apply and we confirm how the work will be signed off before we start. Listed buildings in Northern Ireland need listed building consent from the council for alterations; check with the council's planning service before changing a lantern on a listed property.

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 County Londonderry: questions

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.

Do you provide a report?

Yes, with photos and findings, which is useful for landlords, insurers and disputes with installers.

Which towns in County Londonderry do you cover?

All of County Londonderry, including Derry~Londonderry, Coleraine, Limavady, Magherafelt, Portstewart. Rural and remote addresses are covered by arrangement.

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

Send a few photos of the lantern and the problem with your postcode, by WhatsApp or the form. We reply with a guide price and confirm the fixed price in writing before any work starts.

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

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