If the room under your lantern overheats in summer or glares, the glass is usually the problem, not the frame. Send photos from Merthyr Tydfil (CF47) and we'll tell you which it is — with the price agreed in writing before any work.
What you might be seeing
- 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?
Clear or standard Low-E glass
Standard units let a lot of solar heat through; solar control coatings reflect more of it.
No ventilation
A lantern without opening vents traps warm air at ceiling level.
Covering Merthyr Tydfil 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.
From Bridgend to Merthyr Tydfil is roughly 19 miles — all part of the Mid Glamorgan area we cover.
Neighbouring places we cover include Aberdare (4 miles), Tredegar (6 miles), Rhondda (7 miles).
Guide prices for solar control and self-cleaning glass upgrades in Merthyr Tydfil
Typical range: £345–£895 ex VAT, which is £414–£1,074 with 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 Wales?
In Wales, 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 (as applied in Wales), so we set out the route in writing first. Listed buildings in Wales need listed building consent from the local planning authority for alterations, with Cadw guidance on historic buildings; check with the council before changing a lantern on a listed property.
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 Merthyr Tydfil: questions
Do you need to visit to price solar control and self-cleaning glass upgrades?
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.
Which places near Merthyr Tydfil do you cover?
As well as Merthyr Tydfil, we cover nearby Aberdare, Tredegar, Rhondda, Ebbw Vale and the rest of Mid Glamorgan.
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.
Other lantern repairs in Merthyr Tydfil
- Roof lantern resealing in Merthyr Tydfil
- Glazing bar and capping repairs in Merthyr Tydfil
- Eaves beam and gutter repairs in Merthyr Tydfil
- Misted glass unit replacement in Merthyr Tydfil
- Cracked lantern glass replacement in Merthyr Tydfil
- Flat rooflight and skylight repairs in Merthyr Tydfil
Solar control and self-cleaning glass upgrades near Merthyr Tydfil
More about solar control and self-cleaning glass upgrades · All roof lantern repairs in Merthyr Tydfil