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Cornwall · TR18

Roof lantern replacement in Penzance

If you're in Penzance and dealing with a lantern that's past repair, we can help. We replace lanterns that are beyond economic repair, checking the kerb and re-making the junction, and confirm the fixed price in writing before we start.

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In Penzance, as everywhere, we're repair-first, but some lanterns are past it: distorted frames, rot through the main bars, or most of the glass failed. Send photos and we'll tell you what we think has failed.

Two installers lowering a new aluminium roof lantern onto a prepared timber kerb

Signs you need roof lantern replacement

  • Distorted or sagging frame
  • Rotten timber throughout
  • Single-glazed or very poor thermal performance

Why it happens

Structural damage

Impact or movement distorts the frame.

Rot

Timber lanterns left unmaintained.

Covering Penzance and nearby

Damp, mild winters keep moss and algae growing on flat roofs and lantern frames, which holds water against seals and blocks weep slots. Regular clearing makes a real difference in wetter areas.

Coastal wind drives rain hard against lanterns, so cappings and ridge seals on the seaward face take the most punishment.

Penzance is around 24 miles from Truro, and both are within our Cornwall coverage.

Close by, we also cover Camborne (12 miles), Redruth (16 miles), Falmouth (21 miles).

Guide prices for roof lantern replacement in Penzance

Guide price, supplied and fitted£1,995–£4,995 ex VAT£2,394–£5,994 inc VAT

Guide price for roof lantern replacement: £1,995–£4,995 ex VAT (£2,394–£5,994 inc VAT), supplied and fitted. 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 replacement in Penzance: questions

Do you cover Penzance?

Yes. We cover Penzance, including the TR18 postcode area, as part of Cornwall. 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 Penzance?

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.

How much does a replacement roof lantern cost?

Standard sizes typically £1,995–£4,995 ex VAT supplied and fitted; bespoke sizes and kerb rebuilds are priced on survey. You get the fixed price in writing first.

Can the new lantern use the existing opening?

Usually, if the kerb is sound and the size suits a standard or made-to-measure lantern.

Other lantern repairs in Penzance

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