We carry out condensation diagnosis and fixes in Christchurch and across the BH23 area. Condensation forms when warm, humid air meets a cold surface — and a roof lantern is the coldest surface in many kitchens.

Signs you need condensation diagnosis and fixes
- Drips after cooking, showers or drying clothes
- Black mould at the base of the lantern lining
- 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.
Cold surfaces
Older glass, uninsulated kerbs and un-thermally-broken frames stay cold and collect condensation.
Covering Christchurch 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.
Near the coast, salt in the air is hard on aluminium finishes and fixings; washing the frame occasionally and touching in chips keeps corrosion away.
Christchurch is around 4 miles from Bournemouth, and both are within our Dorset coverage.
Neighbouring places we cover include Bournemouth (4 miles), New Milton (5 miles), Poole (9 miles).
How much should it cost?
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?
Straightforward repairs — resealing, gaskets, cappings, eaves and like-for-like parts — don't normally need building regulations approval in England. Replacing the whole lantern or enlarging the opening is different and falls under the Building Regulations 2010; we confirm in writing which route applies before any replacement. 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 Christchurch: questions
How do I get a price for condensation diagnosis and fixes in Christchurch?
Send a few photos of the lantern and the problem, with your Christchurch 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 Christchurch do you cover?
As well as Christchurch, we cover nearby Bournemouth, New Milton, Poole, Totton and the rest of Dorset.
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.
Other lantern repairs in Christchurch
- Glazing bar and capping repairs in Christchurch
- Flat roof junction and flashing repairs in Christchurch
- uPVC roof lantern repairs in Christchurch
- Flat rooflight and skylight repairs in Christchurch
- Leak investigation and inspection in Christchurch
- Orangery lantern repairs in Christchurch
Condensation diagnosis and fixes near Christchurch
More about condensation diagnosis and fixes · All roof lantern repairs in Christchurch