Aluminium lanterns are strong and slim, but they still rely on gaskets, cappings and seals that wear. Send photos from Swanley (BR8) and we'll tell you which it is — with the price agreed in writing before any work.

What you might be seeing
- Leaks at bars or ridge
- Cappings lifted or rattling
- Misted units
What usually causes it?
Worn gaskets
Gaskets do the weatherproofing; they harden and shrink with age.
Finish damage
Scratches and chips expose bare metal; coastal air speeds up corrosion.
About Swanley and the BR8 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.
Swanley is around 17 miles from Maidstone, and both are within our Kent coverage.
If you're just outside Swanley, we also cover Bexley (3 miles), Dartford (4 miles), Welling (5 miles).
How much should it cost?
Guide price for aluminium roof lantern repairs: £195–£695 ex VAT (£234–£834 inc 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?
Straightforward repairs — resealing, gaskets, cappings, eaves and like-for-like parts — don't normally need building regulations approval in England. Replacing the whole lantern or enlarging the opening is different and falls under the Building Regulations 2010; we confirm in writing which route applies before any replacement. 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 Swanley: questions
Do you cover Swanley?
Yes. We cover Swanley, including the BR8 postcode area, as part of Kent. 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.
Do you need to visit to price aluminium roof lantern repairs?
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.
Can you repaint an aluminium lantern?
Yes — see roof lantern respraying for on-site spray finishes.
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 Swanley
- Glazing bar and capping repairs in Swanley
- Ridge and hip repairs in Swanley
- Opening vent and actuator repairs in Swanley
- Roof lantern respraying in Swanley
- Cleaning and maintenance in Swanley
- Roof lantern replacement in Swanley
Aluminium roof lantern repairs near Swanley
More about aluminium roof lantern repairs · All roof lantern repairs in Swanley