We carry out condensation diagnosis and fixes in Portishead and across the BS20 area. Condensation forms when warm, humid air meets a cold surface — and a roof lantern is the coldest surface in many kitchens.
Is it time for condensation diagnosis and fixes?
- Water on the inside of the glass on cold mornings, even without rain
- Black mould at the base of the lantern lining
- Wet window sills elsewhere in the house too
Why it happens
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.
Covering Portishead and nearby
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.
Portishead is around 35 miles from Taunton, and both are within our Somerset coverage.
Close by, we also cover Nailsea (3 miles), Clevedon (5 miles), Bristol (8 miles).
What should you expect to pay in Portishead?
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 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 Portishead: questions
Can you repair a lantern someone else installed in Portishead?
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.
Which places near Portishead do you cover?
As well as Portishead, we cover nearby Nailsea, Clevedon, Bristol, Weston-super-Mare and the rest of Somerset.
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 Portishead
- Ridge and hip repairs in Portishead
- Flat roof junction and flashing repairs in Portishead
- Solar control and self-cleaning glass upgrades in Portishead
- Flat rooflight and skylight repairs in Portishead
- Cleaning and maintenance in Portishead
- Urgent leak make-safe in Portishead
Condensation diagnosis and fixes near Portishead
More about condensation diagnosis and fixes · All roof lantern repairs in Portishead