We carry out leak investigation and inspection in Letchworth Garden City and across the SG6 area. Some leaks are obvious; many aren't.

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
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.
Roof lanterns in Letchworth Garden City
Lanterns in central England see a bit of everything — summer sun that ages seals and end caps, autumn leaf fall that blocks eaves, and frosty mornings that bring condensation. A yearly check covers all three.
We cover Letchworth Garden City as part of Hertfordshire, about 16 miles from St Albans.
Close by, we also cover Hitchin (3 miles), Stevenage (5 miles), Luton (11 miles).
Guide prices for leak investigation and inspection in Letchworth Garden City
Typical range: £145–£295 ex VAT, which is £174–£354 with 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?
- 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 Letchworth Garden City: questions
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.
Can you repair a lantern someone else installed in Letchworth Garden City?
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 Letchworth Garden City
- Roof lantern resealing in Letchworth Garden City
- Cracked lantern glass replacement in Letchworth Garden City
- Slipped glass panel repairs in Letchworth Garden City
- Aluminium roof lantern repairs in Letchworth Garden City
- Roof lantern respraying in Letchworth Garden City
- Urgent leak make-safe in Letchworth Garden City
Leak investigation and inspection near Letchworth Garden City
More about leak investigation and inspection · All roof lantern repairs in Letchworth Garden City