In Portishead, as everywhere, if the room under your lantern overheats in summer or glares, the glass is usually the problem, not the frame. Send photos and we'll tell you what we think has failed.

Is it time for solar control and self-cleaning glass upgrades?
- The room is noticeably hotter than the rest of the house in summer
- 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.
Covering Portishead and nearby
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.
We cover Portishead as part of Somerset, about 35 miles from Taunton.
We also cover nearby Nailsea (3 miles), Clevedon (5 miles), Bristol (8 miles).
What should you expect to pay in Portishead?
Most solar control and self-cleaning glass upgrades jobs come in between £345 and £895 ex VAT (£414–£1,074 including 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?
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.
Solar control and self-cleaning glass upgrades in Portishead: questions
How do I get a price for solar control and self-cleaning glass upgrades in Portishead?
Send a few photos of the lantern and the problem, with your Portishead postcode. We'll reply with a guide price and tell you whether a visit is needed before we can fix the price.
Can you repair a lantern someone else installed in Portishead?
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 it cost to upgrade lantern glass?
Usually £345–£895 ex VAT per unit depending on size and specification, confirmed in writing before work starts.
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.
Other lantern repairs in Portishead
- Roof lantern resealing in Portishead
- Upstand and kerb repairs in Portishead
- Slipped glass panel repairs in Portishead
- uPVC roof lantern repairs in Portishead
- Leak investigation and inspection in Portishead
- Orangery lantern repairs in Portishead
Solar control and self-cleaning glass upgrades near Portishead
More about solar control and self-cleaning glass upgrades · All roof lantern repairs in Portishead