Roof lantern leak repairs in Hertfordshire

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 Hertfordshire, 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 Hertfordshire

Most inland lantern leaks aren't storm damage; they're usually tired sealant, a lifted capping or blocked eaves drainage. All three are quick to find and fix once you know where to look.

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

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?

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.

Roof lantern leak repairs in Hertfordshire: questions

Do I need to be home?

If we need to water-test or check the inside of the lantern, yes. Exterior-only work can sometimes be done with access arranged in advance.

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 Hertfordshire do you cover?

All of Hertfordshire, including St Albans, Watford, Hemel Hempstead, Stevenage, Welwyn Garden City, Cheshunt. Rural and remote addresses are covered by arrangement.

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

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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