In Staines, 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
- Drips after cooking, showers or drying clothes
- Black mould at the base of the lantern lining
- Wet window sills elsewhere in the house too
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.
Covering Staines and nearby
Even in drier areas, one heavy downpour with blocked eaves is enough to overflow a lantern indoors. Clearing the eaves channel is the simplest prevention there is.
Staines is around 14 miles from Guildford, and both are within our Surrey coverage.
If you're just outside Staines, we also cover Egham (2 miles), Ashford, Surrey (2 miles), Feltham (4 miles).
Guide prices for condensation diagnosis and fixes in Staines
Typical range: £145–£495 ex VAT, which is £174–£594 with 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?
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.
Condensation diagnosis and fixes in Staines: questions
How do I get a price for condensation diagnosis and fixes in Staines?
Send a few photos of the lantern and the problem, with your Staines postcode. We'll reply with a guide price and tell you whether a visit is needed before we can fix the price.
Which places near Staines do you cover?
As well as Staines, we cover nearby Egham, Ashford, Surrey, Feltham, Sunbury-on-Thames and the rest of Surrey.
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.
What does a condensation visit cost?
Diagnosis visits start from £145 ex VAT. Any fixes are priced separately and confirmed in writing before work starts.
Other lantern repairs in Staines
- Roof lantern resealing in Staines
- Eaves beam and gutter repairs in Staines
- Flat roof junction and flashing repairs in Staines
- Misted glass unit replacement in Staines
- Slipped glass panel repairs in Staines
- Urgent leak make-safe in Staines
Condensation diagnosis and fixes near Staines
More about condensation diagnosis and fixes · All roof lantern repairs in Staines