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 East Sussex, 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 East Sussex
Sun and UV do more damage than rain on many lanterns here: brittle ridge caps, chalky finishes and hardened gaskets. They're cheap to replace before they let water in.
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 East Sussex?
Guide price for flat rooflight and skylight repairs: £195–£595 ex VAT (£234–£714 inc 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 East Sussex: questions
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.
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 East Sussex do you cover?
All of East Sussex, including Brighton, Eastbourne, Hastings, Hove, Bexhill-on-Sea, Hailsham. Rural and remote addresses are covered by arrangement.
How do I get a price for flat rooflight and skylight repairs in East Sussex?
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 East Sussex
- Roof lantern leak repairs in East Sussex
- Flat roof junction and flashing repairs in East Sussex
- Aluminium roof lantern repairs in East Sussex
- Opening vent and actuator repairs in East Sussex
- Cleaning and maintenance in East Sussex
- Orangery lantern repairs in East Sussex
Nearby areas
- Flat rooflight and skylight repairs in West Sussex
- Flat rooflight and skylight repairs in Kent
- Flat rooflight and skylight repairs in Surrey
- Flat rooflight and skylight repairs in Greater London
- Flat rooflight and skylight repairs in Essex
More about flat rooflight and skylight repairs · All roof lantern repairs in East Sussex