Flat rooflights fail in the same places as lanterns: the seal to the upstand, the roof junction and the glass unit. We carry out flat rooflight and skylight repairs across Northumberland, with a guide price from your photos and a fixed price in writing before any work starts.

Signs you need flat rooflight and skylight repairs
- Water around the rooflight edge
- Ponding on the glass (not enough fall)
- Cracked sealant or a lifted membrane at the upstand
What usually causes it?
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 Northumberland
Freeze-thaw cycles open up tired sealant and gaskets faster than mild weather does. A spring check after a hard winter catches most problems before they leak.
Coastal wind drives rain hard against lanterns, so cappings and ridge seals on the seaward face take the most punishment.
What should you expect to pay for flat rooflight and skylight repairs in Northumberland?
Typical range: £195–£595 ex VAT, which is £234–£714 with 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?
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.
Flat rooflight and skylight repairs in Northumberland: questions
What does a flat rooflight repair cost?
Usually £195–£595 ex VAT, confirmed in writing before work starts.
Can you fix a Velux-style roof window?
Our focus is flat rooflights and lanterns; pitched roof windows are a different trade and we'll say so if that's what you have.
Which towns in Northumberland do you cover?
All of Northumberland, including Morpeth, Blyth, Cramlington, Ashington, Hexham. Rural and remote addresses are covered by arrangement.
How do I get a price for flat rooflight and skylight repairs in Northumberland?
Send a few photos of the lantern and the problem with your postcode, by WhatsApp or the form. We reply with a guide price and confirm the fixed price in writing before any work starts.
Other repairs in Northumberland
- Eaves beam and gutter repairs in Northumberland
- Flat roof junction and flashing repairs in Northumberland
- Misted glass unit replacement in Northumberland
- uPVC roof lantern repairs in Northumberland
- Urgent leak make-safe in Northumberland
- Commercial roof lantern repairs in Northumberland
Nearby areas
- Flat rooflight and skylight repairs in Tyne and Wear
- Flat rooflight and skylight repairs in County Durham
- Flat rooflight and skylight repairs in North Yorkshire
- Flat rooflight and skylight repairs in Cumbria
- Flat rooflight and skylight repairs in West Yorkshire
More about flat rooflight and skylight repairs · All roof lantern repairs in Northumberland