Flat rooflights fail in the same places as lanterns: the seal to the upstand, the roof junction and the glass unit. Send photos from Middlesbrough (TS1) and we'll tell you which it is — with the price agreed in writing before any work.

What you might be seeing
- Water around the rooflight edge
- Misted glass
- Ponding on the glass (not enough fall)
Why it happens
No fall
Flat glass needs a slight fall to shed water; ponding stresses seals.
Upstand detail
As with lanterns, the membrane must be dressed up and sealed.
Roof lanterns in Middlesbrough
Colder winters mean more frosty mornings, and a roof lantern is often the coldest surface in a warm kitchen — so condensation is as common as genuine leaks. We check which you've got before quoting.
Neighbouring places we cover include Billingham (2 miles), Stockton-on-Tees (3 miles), Thornaby-on-Tees (4 miles).
How much should it cost?
Most flat rooflight and skylight repairs jobs come in between £195 and £595 ex VAT (£234–£714 including VAT), per rooflight. 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?
In England, like-for-like repairs to a roof lantern don't usually involve building control. A full replacement or a bigger opening is controlled under the Building Regulations 2010, so we set out the route in writing first. 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.
Flat rooflight and skylight repairs in Middlesbrough: questions
How do I get a price for flat rooflight and skylight repairs in Middlesbrough?
Send a few photos of the lantern and the problem, with your Middlesbrough postcode. We'll reply with a guide price and tell you whether a visit is needed before we can fix the price.
Can you repair a lantern someone else installed in Middlesbrough?
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.
What does a flat rooflight repair cost?
Usually £195–£595 ex VAT, confirmed in writing before work starts.
Do you replace walk-on rooflight glass?
Walk-on glass is a specialist structural unit; we can measure and specify a replacement from the right manufacturer.
Other lantern repairs in Middlesbrough
- Upstand and kerb repairs in Middlesbrough
- Misted glass unit replacement in Middlesbrough
- Slipped glass panel repairs in Middlesbrough
- Condensation diagnosis and fixes in Middlesbrough
- Aluminium roof lantern repairs in Middlesbrough
- Commercial roof lantern repairs in Middlesbrough
Flat rooflight and skylight repairs near Middlesbrough
More about flat rooflight and skylight repairs · All roof lantern repairs in Middlesbrough