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 from Letchworth Garden City (SG6) and we'll tell you which it is — with the price agreed in writing before any work.

Is it time for roof lantern replacement?
- Several misted or cracked units
- Distorted or sagging frame
- Single-glazed or very poor thermal performance
Why it happens
Age
Older lanterns can't be brought up to modern performance with repairs alone.
Structural damage
Impact or movement distorts the frame.
About Letchworth Garden City and the SG6 area
Lanterns in central England see a bit of everything — summer sun that ages seals and end caps, autumn leaf fall that blocks eaves, and frosty mornings that bring condensation. A yearly check covers all three.
From St Albans to Letchworth Garden City is roughly 16 miles — all part of the Hertfordshire area we cover.
If you're just outside Letchworth Garden City, we also cover Hitchin (3 miles), Stevenage (5 miles), Luton (11 miles).
What should you expect to pay in Letchworth Garden City?
Guide price for roof lantern replacement: £1,995–£4,995 ex VAT (£2,394–£5,994 inc 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 Letchworth Garden City: questions
Do you cover Letchworth Garden City?
Yes. We cover Letchworth Garden City, including the SG6 postcode area, as part of Hertfordshire. 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.
Can you repair a lantern someone else installed in Letchworth Garden City?
Yes. We repair lanterns whoever fitted them. If yours is still under the installer's warranty, contact them first so you don't affect it.
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.
Will you tell me if repair is enough?
Yes. We'd rather do a repair that works than sell a lantern you don't need.
Other lantern repairs in Letchworth Garden City
- Upstand and kerb repairs in Letchworth Garden City
- Cracked lantern glass replacement in Letchworth Garden City
- Slipped glass panel repairs in Letchworth Garden City
- Condensation diagnosis and fixes in Letchworth Garden City
- Flat rooflight and skylight repairs in Letchworth Garden City
- Leak investigation and inspection in Letchworth Garden City
Roof lantern replacement near Letchworth Garden City
More about roof lantern replacement · All roof lantern repairs in Letchworth Garden City