If the room under your lantern overheats in summer or glares, the glass is usually the problem, not the frame. We carry out solar control and self-cleaning glass upgrades across Cornwall, with a guide price from your photos and a fixed price in writing before any work starts.

Signs you need solar control and self-cleaning glass upgrades
- Glare on screens or worktops
- Furniture or flooring fading under the lantern
- Clear, uncoated glass in an older lantern
What usually causes it?
Orientation
South- and west-facing lanterns gain the most heat in the afternoon.
No ventilation
A lantern without opening vents traps warm air at ceiling level.
Roof lanterns in Cornwall
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.
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.
What should you expect to pay for solar control and self-cleaning glass upgrades in Cornwall?
Guide price for solar control and self-cleaning glass upgrades: £345–£895 ex VAT (£414–£1,074 inc VAT), per glass unit. 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.
Solar control and self-cleaning glass upgrades in Cornwall: questions
Can you add a film instead?
Films are cheaper but can affect the unit's warranty and may not suit sloped double glazing. We'd rather replace the unit properly.
Does self-cleaning glass mean no cleaning?
It reduces cleaning on the outer face but still needs rain and occasional rinsing, and the inside still needs cleaning.
Which towns in Cornwall do you cover?
All of Cornwall, including Truro, Redruth, Falmouth, St Austell, Camborne, Newquay. Rural and remote addresses are covered by arrangement.
How do I get a price for solar control and self-cleaning glass upgrades in Cornwall?
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.
Other repairs in Cornwall
- Roof lantern resealing in Cornwall
- Upstand and kerb repairs in Cornwall
- Misted glass unit replacement in Cornwall
- Cracked lantern glass replacement in Cornwall
- Slipped glass panel repairs in Cornwall
- Flat rooflight and skylight repairs in Cornwall
Nearby areas
- Solar control and self-cleaning glass upgrades in Devon
- Solar control and self-cleaning glass upgrades in Somerset
- Solar control and self-cleaning glass upgrades in Bristol
- Solar control and self-cleaning glass upgrades in Dorset
- Solar control and self-cleaning glass upgrades in Wiltshire
More about solar control and self-cleaning glass upgrades · All roof lantern repairs in Cornwall