In Ross-on-Wye, as everywhere, condensation forms when warm, humid air meets a cold surface — and a roof lantern is the coldest surface in many kitchens. Send photos and we'll tell you what we think has failed.

What you might be seeing
- Water on the inside of the glass on cold mornings, even without rain
- Drips after cooking, showers or drying clothes
- Black mould at the base of the lantern lining
Common causes we find
Cold surfaces
Older glass, uninsulated kerbs and un-thermally-broken frames stay cold and collect condensation.
Poor ventilation
Without trickle vents, extraction or an opening vent, moist air has nowhere to go.
About Ross-on-Wye and the HR9 area
Damp, mild winters keep moss and algae growing on flat roofs and lantern frames, which holds water against seals and blocks weep slots. Regular clearing makes a real difference in wetter areas.
Ross-on-Wye is around 12 miles from Hereford, and both are within our Herefordshire coverage.
Neighbouring places we cover include Ledbury (10 miles), Hereford (12 miles), Gloucester (14 miles).
How much should it cost?
Guide price for condensation diagnosis and fixes: £145–£495 ex VAT (£174–£594 inc VAT), per visit. 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.
Condensation diagnosis and fixes in Ross-on-Wye: questions
How do I get a price for condensation diagnosis and fixes in Ross-on-Wye?
Send a few photos of the lantern and the problem, with your Ross-on-Wye 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 Ross-on-Wye?
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.
Will new glass stop condensation?
Better glass raises the inner surface temperature and helps, but if the room is very humid, ventilation matters more. We'll tell you which will make the bigger difference.
Is condensation in a lantern normal?
Occasional light condensation on very cold mornings can be. Regular dripping isn't, and can damage linings and cause mould.
Other lantern repairs in Ross-on-Wye
- Eaves beam and gutter repairs in Ross-on-Wye
- Flat roof junction and flashing repairs in Ross-on-Wye
- Misted glass unit replacement in Ross-on-Wye
- uPVC roof lantern repairs in Ross-on-Wye
- Opening vent and actuator repairs in Ross-on-Wye
- Flat rooflight and skylight repairs in Ross-on-Wye
Condensation diagnosis and fixes near Ross-on-Wye
More about condensation diagnosis and fixes · All roof lantern repairs in Ross-on-Wye