If the room under your lantern overheats in summer or glares, the glass is usually the problem, not the frame. Send photos from Derry~Londonderry (BT47) and we'll tell you which it is — with the price agreed in writing before any work.

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
Common causes we find
Clear or standard Low-E glass
Standard units let a lot of solar heat through; solar control coatings reflect more of it.
Orientation
South- and west-facing lanterns gain the most heat in the afternoon.
Roof lanterns in Derry~Londonderry
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.
Neighbouring places we cover include Strabane (14 miles), Limavady (15 miles), Portstewart (27 miles).
Guide prices for solar control and self-cleaning glass upgrades in Derry~Londonderry
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 Northern Ireland?
Straightforward repairs — resealing, gaskets, cappings, eaves and like-for-like parts — don't normally need building regulations approval in Northern Ireland. Replacing the whole lantern or enlarging the opening is different and falls under the Building Regulations (Northern Ireland) 2012; we confirm in writing which route applies before any replacement. Listed buildings in Northern Ireland need listed building consent from the council for alterations; check with the council's planning service 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 Derry~Londonderry: questions
Do you cover Derry~Londonderry?
Yes. We cover Derry~Londonderry, including the BT47 postcode area, as part of County Londonderry. 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.
Which places near Derry~Londonderry do you cover?
As well as Derry~Londonderry, we cover nearby Strabane, Limavady, Portstewart, Coleraine and the rest of County Londonderry.
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 Derry~Londonderry
- Glazing bar and capping repairs in Derry~Londonderry
- Ridge and hip repairs in Derry~Londonderry
- Eaves beam and gutter repairs in Derry~Londonderry
- Aluminium roof lantern repairs in Derry~Londonderry
- Cleaning and maintenance in Derry~Londonderry
- Commercial roof lantern repairs in Derry~Londonderry
Solar control and self-cleaning glass upgrades near Derry~Londonderry
More about solar control and self-cleaning glass upgrades · All roof lantern repairs in Derry~Londonderry