Many uPVC roof lanterns have an aluminium core with uPVC cladding and cappings. Send photos from St Austell (PL25) and we'll tell you which it is — with the price agreed in writing before any work.

What you might be seeing
- Cracked cappings or ridge covers
- Rattling or whistling in wind
- Leaks at the ridge or eaves
Common causes we find
UV ageing
uPVC components become brittle and crack after years of sun.
Clip failure
Clip-on cappings can lose their grip and lift.
Roof lanterns in St Austell
Wind-driven rain is the real test of a roof lantern, and the wetter west sees plenty of it. Leaks that appear only in a storm from one direction usually point to the cappings or eaves on that face — a useful clue when you send us photos.
Coastal wind drives rain hard against lanterns, so cappings and ridge seals on the seaward face take the most punishment.
From Truro to St Austell is roughly 13 miles — all part of the Cornwall area we cover.
Close by, we also cover Bodmin (9 miles), Truro (13 miles), Newquay (14 miles).
Guide prices for uPVC roof lantern repairs in St Austell
Typical range: £175–£595 ex VAT, which is £210–£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?
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?
- 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.
uPVC roof lantern repairs in St Austell: questions
Do you need to visit to price uPVC roof lantern repairs?
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 St Austell?
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 uPVC lantern repair cost?
Usually £175–£595 ex VAT per lantern, confirmed in writing before work starts.
Is it worth repairing an old uPVC lantern?
If the glass is sound and the frame isn't distorted, a repair is usually far cheaper than replacement.
Other lantern repairs in St Austell
- Ridge and hip repairs in St Austell
- Eaves beam and gutter repairs in St Austell
- Misted glass unit replacement in St Austell
- Cleaning and maintenance in St Austell
- Roof lantern replacement in St Austell
- Commercial roof lantern repairs in St Austell
uPVC roof lantern repairs near St Austell
More about uPVC roof lantern repairs · All roof lantern repairs in St Austell