Condensation forms when warm, humid air meets a cold surface — and a roof lantern is the coldest surface in many kitchens. We carry out condensation diagnosis and fixes across Isle of Wight, with a guide price from your photos and a fixed price in writing before any work starts.

Signs you need condensation diagnosis and fixes
- Water on the inside of the glass on cold mornings, even without rain
- Drips after cooking, showers or drying clothes
- Wet window sills elsewhere in the house too
What usually causes it?
High humidity
Cooking, kettles, showers, drying washing and people all add moisture to the air.
Poor ventilation
Without trickle vents, extraction or an opening vent, moist air has nowhere to go.
Roof lanterns in Isle of Wight
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 condensation diagnosis and fixes in Isle of Wight?
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?
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 Isle of Wight: questions
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.
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.
Which towns in Isle of Wight do you cover?
All of Isle of Wight, including Newport, Isle of Wight, Ryde, Cowes, Sandown. Rural and remote addresses are covered by arrangement.
How do I get a price for condensation diagnosis and fixes in Isle of Wight?
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 Isle of Wight
- Roof lantern leak repairs in Isle of Wight
- Glazing bar and capping repairs in Isle of Wight
- Upstand and kerb repairs in Isle of Wight
- Timber roof lantern repairs in Isle of Wight
- uPVC roof lantern repairs in Isle of Wight
- Urgent leak make-safe in Isle of Wight
Nearby areas
- Condensation diagnosis and fixes in Hampshire
- Condensation diagnosis and fixes in Dorset
- Condensation diagnosis and fixes in West Sussex
- Condensation diagnosis and fixes in Berkshire
- Condensation diagnosis and fixes in Wiltshire
More about condensation diagnosis and fixes · All roof lantern repairs in Isle of Wight