Condensation forms when warm, humid air meets a cold surface — and a roof lantern is the coldest surface in many kitchens. Send photos from Letchworth Garden City (SG6) and we'll tell you which it is — with the price agreed in writing before any work.
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 Letchworth Garden City
Most inland lantern leaks aren't storm damage; they're usually tired sealant, a lifted capping or blocked eaves drainage. All three are quick to find and fix once you know where to look.
From St Albans to Letchworth Garden City is roughly 16 miles — all part of the Hertfordshire area we cover.
If you're just outside Letchworth Garden City, we also cover Hitchin (3 miles), Stevenage (5 miles), Luton (11 miles).
Guide prices for condensation diagnosis and fixes in Letchworth Garden City
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 Letchworth Garden City: questions
Do you cover Letchworth Garden City?
Yes. We cover Letchworth Garden City, including the SG6 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.
Can you repair a lantern someone else installed in Letchworth Garden City?
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.
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 Letchworth Garden City
- Glazing bar and capping repairs in Letchworth Garden City
- Eaves beam and gutter repairs in Letchworth Garden City
- Misted glass unit replacement in Letchworth Garden City
- uPVC roof lantern repairs in Letchworth Garden City
- Opening vent and actuator repairs in Letchworth Garden City
- Flat rooflight and skylight repairs in Letchworth Garden City
Condensation diagnosis and fixes near Letchworth Garden City
More about condensation diagnosis and fixes · All roof lantern repairs in Letchworth Garden City