In Penzance, as everywhere, the junction where the flat roof covering meets the lantern kerb is a weak point on many extensions. Send photos and we'll tell you what we think has failed.
Is it time for flat roof junction and flashing repairs?
- Leak near the lantern but not from the frame
- Splits, blisters or lifted edges in the roof covering by the kerb
- Ponding on the roof next to the lantern
Why it happens
Unbonded membrane
EPDM or single-ply that has come away from the kerb lets water run behind it.
Missing trims
Without a trim or flashing to protect the top edge, water gets in behind the membrane.
Roof lanterns in Penzance
Western and upland parts of the UK get more rain and more wind-driven rain than the east, and that's what finds weak cappings and blocked eaves first. Lanterns here benefit from a check of the bars on the most exposed face and a clear eaves channel before winter.
Near the coast, salt in the air is hard on aluminium finishes and fixings; washing the frame occasionally and touching in chips keeps corrosion away.
Penzance is around 24 miles from Truro, and both are within our Cornwall coverage.
Neighbouring places we cover include Camborne (12 miles), Redruth (16 miles), Falmouth (21 miles).
Guide prices for flat roof junction and flashing repairs in Penzance
Typical range: £245–£695 ex VAT, which is £294–£834 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.
Flat roof junction and flashing repairs in Penzance: questions
How do I get a price for flat roof junction and flashing repairs in Penzance?
Send a few photos of the lantern and the problem, with your Penzance postcode. We'll reply with a guide price and tell you whether a visit is needed before we can fix the price.
Which places near Penzance do you cover?
As well as Penzance, we cover nearby Camborne, Redruth, Falmouth, Truro and the rest of Cornwall.
What does a junction repair cost?
Usually £245–£695 ex VAT, confirmed in writing before work starts.
Can you repair a GRP roof without it showing?
Repairs are colour-matched as closely as possible, but new topcoat next to weathered topcoat can look slightly different at first.
Other lantern repairs in Penzance
- Roof lantern resealing in Penzance
- Glazing bar and capping repairs in Penzance
- Upstand and kerb repairs in Penzance
- Misted glass unit replacement in Penzance
- Roof lantern respraying in Penzance
- Orangery lantern repairs in Penzance
Flat roof junction and flashing repairs near Penzance
More about flat roof junction and flashing repairs · All roof lantern repairs in Penzance