In Brentwood, as everywhere, we're repair-first, but some lanterns are past it: distorted frames, rot through the main bars, or most of the glass failed. Send photos and we'll tell you what we think has failed.

Signs you need roof lantern replacement
- Several misted or cracked units
- Distorted or sagging frame
- Single-glazed or very poor thermal performance
Common causes we find
Age
Older lanterns can't be brought up to modern performance with repairs alone.
Structural damage
Impact or movement distorts the frame.
Covering Brentwood and nearby
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.
We cover Brentwood as part of Essex, about 11 miles from Chelmsford.
Close by, we also cover Billericay (5 miles), Hornchurch (6 miles), Romford (6 miles).
How much should it cost?
Most roof lantern replacement jobs come in between £1,995 and £4,995 ex VAT (£2,394–£5,994 including VAT), supplied and fitted. 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.
Roof lantern replacement in Brentwood: questions
Do you need to visit to price roof lantern replacement?
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 Brentwood do you cover?
As well as Brentwood, we cover nearby Billericay, Hornchurch, Romford, Basildon and the rest of Essex.
How much does a replacement roof lantern cost?
Standard sizes typically £1,995–£4,995 ex VAT supplied and fitted; bespoke sizes and kerb rebuilds are priced on survey. You get the fixed price in writing first.
Can the new lantern use the existing opening?
Usually, if the kerb is sound and the size suits a standard or made-to-measure lantern.
Other lantern repairs in Brentwood
- Roof lantern leak repairs in Brentwood
- Flat roof junction and flashing repairs in Brentwood
- Misted glass unit replacement in Brentwood
- Condensation diagnosis and fixes in Brentwood
- Aluminium roof lantern repairs in Brentwood
- Flat rooflight and skylight repairs in Brentwood
Roof lantern replacement near Brentwood
More about roof lantern replacement · All roof lantern repairs in Brentwood