In Horsham, as everywhere, aluminium lanterns are strong and slim, but they still rely on gaskets, cappings and seals that wear. Send photos and we'll tell you what we think has failed.

Signs you need aluminium roof lantern repairs
- Leaks at bars or ridge
- Misted units
- Corrosion at cut edges or fixings in coastal areas
Why it happens
Worn gaskets
Gaskets do the weatherproofing; they harden and shrink with age.
Thermal movement
Aluminium moves with temperature; seals and fixings take the strain.
About Horsham and the RH12 area
Even in drier areas, one heavy downpour with blocked eaves is enough to overflow a lantern indoors. Clearing the eaves channel is the simplest prevention there is.
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.
We cover Horsham as part of West Sussex, about 25 miles from Chichester.
We also cover nearby Crawley (7 miles), Horley (11 miles), Haywards Heath (11 miles).
Guide prices for aluminium roof lantern repairs in Horsham
Typical range: £195–£695 ex VAT, which is £234–£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.
Aluminium roof lantern repairs in Horsham: questions
Do you cover Horsham?
Yes. We cover Horsham, including the RH12 postcode area, as part of West Sussex. 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.
How do I get a price for aluminium roof lantern repairs in Horsham?
Send a few photos of the lantern and the problem, with your Horsham postcode. We'll reply with a guide price and tell you whether a visit is needed before we can fix the price.
What do aluminium lantern repairs cost?
Most component repairs are £195–£695 ex VAT per lantern, confirmed in writing before work starts.
My lantern brand is unknown — can you still help?
Usually. Many systems share common parts, and where they don't we adapt the detail.
Other lantern repairs in Horsham
- Roof lantern resealing in Horsham
- Glazing bar and capping repairs in Horsham
- Flat roof junction and flashing repairs in Horsham
- Slipped glass panel repairs in Horsham
- Opening vent and actuator repairs in Horsham
- Commercial roof lantern repairs in Horsham
Aluminium roof lantern repairs near Horsham
More about aluminium roof lantern repairs · All roof lantern repairs in Horsham