Condensation forms when warm, humid air meets a cold surface — and a roof lantern is the coldest surface in many kitchens. Send photos from Tonypandy (CF40) and we'll tell you which it is — with the price agreed in writing before any work.
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
What usually causes it?
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 Tonypandy and the CF40 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.
We cover Tonypandy as part of Mid Glamorgan, about 10 miles from Bridgend.
We also cover nearby Rhondda (3 miles), Pontypridd (5 miles), Aberdare (6 miles).
Guide prices for condensation diagnosis and fixes in Tonypandy
Most condensation diagnosis and fixes jobs come in between £145 and £495 ex VAT (£174–£594 including 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 Wales?
Straightforward repairs — resealing, gaskets, cappings, eaves and like-for-like parts — don't normally need building regulations approval in Wales. Replacing the whole lantern or enlarging the opening is different and falls under the Building Regulations 2010 (as applied in Wales); we confirm in writing which route applies before any replacement. Listed buildings in Wales need listed building consent from the local planning authority for alterations, with Cadw guidance on historic buildings; check with the council before changing a lantern on a listed property.
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 Tonypandy: questions
How do I get a price for condensation diagnosis and fixes in Tonypandy?
Send a few photos of the lantern and the problem, with your Tonypandy 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 Tonypandy do you cover?
As well as Tonypandy, we cover nearby Rhondda, Pontypridd, Aberdare, Maesteg and the rest of Mid Glamorgan.
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 Tonypandy
- Roof lantern leak repairs in Tonypandy
- Glazing bar and capping repairs in Tonypandy
- Flat roof junction and flashing repairs in Tonypandy
- Flat rooflight and skylight repairs in Tonypandy
- Leak investigation and inspection in Tonypandy
- Orangery lantern repairs in Tonypandy
Condensation diagnosis and fixes near Tonypandy
More about condensation diagnosis and fixes · All roof lantern repairs in Tonypandy