ROOFLANTERNREPAIRS.co.uk
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Hampshire · PO5

Roof lantern leak repairs in Portsmouth

We cover Portsmouth and the wider Hampshire area for roof lantern leak repairs. In short, we trace where the water gets in and repair the seal, capping, ridge, eaves or kerb that has failed — and you know the price before any work begins.

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We carry out roof lantern leak repairs in Portsmouth and across the PO5 area. 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.

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

Signs you need roof lantern leak repairs

  • Drips from a glazing bar or the eaves beam when it rains
  • Water running down the inside face of the glass
  • Damp patches on the ceiling a short distance from the lantern

Common causes we find

Lifted or misaligned cappings

Top cappings clip or screw over each glazing bar. If one has lifted, been knocked or was never seated, rain gets straight under it.

Blocked eaves drainage

Most lanterns collect water in a channel inside the eaves beam and let it out through weep slots. Leaves, moss and grit block the slots and the channel overflows indoors.

Roof lanterns in Portsmouth

Sun and UV do more damage than rain on many lanterns here: brittle ridge caps, chalky finishes and hardened gaskets. They're cheap to replace before they let water in.

Portsmouth is around 15 miles from Southampton, and both are within our Hampshire coverage.

Neighbouring places we cover include Gosport (2 miles), Fareham (5 miles), Ryde (6 miles).

Guide prices for roof lantern leak repairs in Portsmouth

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

Most roof lantern leak repairs jobs come in between £195 and £595 ex VAT (£234–£714 including 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?

In England, like-for-like repairs to a roof lantern don't usually involve building control. A full replacement or a bigger opening is controlled under the Building Regulations 2010, so we set out the route in writing first. 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.

Roof lantern leak repairs in Portsmouth: questions

Do you cover Portsmouth?

Yes. We cover Portsmouth, including the PO5 postcode area, as part of Hampshire. Send photos by WhatsApp or the form for a free guide price, and we'll confirm the fixed price in writing before any work starts.

Can you repair a lantern someone else installed in Portsmouth?

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.

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.

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