Roof lantern leak repairs in Northamptonshire

A roof lantern leak is almost always a failed seal, a lifted capping, blocked eaves drainage or a problem where the kerb meets the flat roof — not a failed lantern. We carry out roof lantern leak repairs across Northamptonshire, with a guide price from your photos and a fixed price in writing before any work starts.

Rainwater running down an internal glazing bar of a roof lantern above a kitchen

Signs you need roof lantern leak repairs

Brown staining or bubbling paint on the plasterboard lining around the lantern
Damp patches on the ceiling a short distance from the lantern
A leak that only appears in wind-driven rain from one direction

What usually causes it?

Failed silicone or glazing tape

UV and thermal movement break down the seal between capping, gasket and glass. Once a gap opens, water tracks along the bar and drops at the lowest point.

The kerb or roof junction

If the flat roof membrane isn't dressed high enough up the kerb, or the kerb has no fall, water sits against the joint and finds its way in under the lantern.

Roof lanterns in Northamptonshire

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.

What should you expect to pay for roof lantern leak repairs in Northamptonshire?

Guide price, per lantern£195–£595 ex VAT£234–£714 inc VAT

Typical range: £195–£595 ex VAT, which is £234–£714 with VAT, per lantern. 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.

Roof lantern leak repairs in Northamptonshire: questions

Can you fix the leak in the rain?

We can make the lantern safe in wet weather, but sealants and tapes need a dry, clean surface to bond, so permanent repairs are done in a dry window.

Will you show me what was wrong?

Yes. We photograph the failed detail and the finished repair and send them to you with the invoice.

Which towns in Northamptonshire do you cover?

All of Northamptonshire, including Northampton, Corby, Kettering, Wellingborough, Rushden, Daventry. Rural and remote addresses are covered by arrangement.

How do I get a price for roof lantern leak repairs in Northamptonshire?

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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