We carry out condensation diagnosis and fixes in St Albans and across the AL1 area. Condensation forms when warm, humid air meets a cold surface — and a roof lantern is the coldest surface in many kitchens.
What you might be seeing
- 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
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.
About St Albans and the AL1 area
Leaf fall from garden trees is the most common cause of eaves overflow on suburban extensions. If your lantern sits near trees, clearing the eaves channel each autumn prevents a lot of drips.
Neighbouring places we cover include Harpenden (5 miles), Hatfield (5 miles), Hemel Hempstead (5 miles).
How much should it cost?
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?
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 St Albans: questions
Do you cover St Albans?
Yes. We cover St Albans, including the AL1 postcode area, as part of Hertfordshire. Send photos by WhatsApp or the form for a free guide price, and we'll confirm the fixed price in writing before any work starts.
How do I get a price for condensation diagnosis and fixes in St Albans?
Send a few photos of the lantern and the problem, with your St Albans postcode. We'll reply with a guide price and tell you whether a visit is needed before we can fix the price.
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 St Albans
- Roof lantern resealing in St Albans
- Eaves beam and gutter repairs in St Albans
- Aluminium roof lantern repairs in St Albans
- Leak investigation and inspection in St Albans
- Roof lantern replacement in St Albans
- Orangery lantern repairs in St Albans
Condensation diagnosis and fixes near St Albans
More about condensation diagnosis and fixes · All roof lantern repairs in St Albans