In Streatham, as everywhere, many uPVC roof lanterns have an aluminium core with uPVC cladding and cappings. Send photos and we'll tell you what we think has failed.

Signs you need uPVC roof lantern repairs
- Yellowed or brittle end caps
- Cracked cappings or ridge covers
- Leaks at the ridge or eaves
What usually causes it?
UV ageing
uPVC components become brittle and crack after years of sun.
Clip failure
Clip-on cappings can lose their grip and lift.
About Streatham and the SW16 area
Drier, sunnier parts of the UK are kinder to seals than the wet west, but strong sun ages sealant, gaskets and plastic end caps, and south- or west-facing lanterns can make rooms very warm. Solar control glass and an opening vent help.
Across London, many lanterns sit on rear extensions with access only through the house, so we protect floors and plan the work to keep time indoors to a minimum. Parking and any permits are factored into the quote.
Streatham is around 5 miles from Westminster, and both are within our Greater London coverage.
We also cover nearby Mitcham (2 miles), Brixton (3 miles), Wimbledon (3 miles).
What should you expect to pay in Streatham?
Guide price for uPVC roof lantern repairs: £175–£595 ex VAT (£210–£714 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.
uPVC roof lantern repairs in Streatham: questions
Do you cover Streatham?
Yes. We cover Streatham, including the SW16 postcode area, as part of Greater London. 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 Streatham do you cover?
As well as Streatham, we cover nearby Mitcham, Brixton, Wimbledon, Battersea and the rest of Greater London.
What does a uPVC lantern repair cost?
Usually £175–£595 ex VAT per lantern, confirmed in writing before work starts.
Can you change my uPVC lantern's colour?
Yes, with a respray suitable for uPVC.
Other lantern repairs in Streatham
- Roof lantern leak repairs in Streatham
- Ridge and hip repairs in Streatham
- Condensation diagnosis and fixes in Streatham
- Aluminium roof lantern repairs in Streatham
- Cleaning and maintenance in Streatham
- Orangery lantern repairs in Streatham
uPVC roof lantern repairs near Streatham
More about uPVC roof lantern repairs · All roof lantern repairs in Streatham