We carry out condensation diagnosis and fixes in Kettering and across the NN16 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
- Drips after cooking, showers or drying clothes
- 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 Kettering and nearby
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.
We cover Kettering as part of Northamptonshire, about 12 miles from Northampton.
If you're just outside Kettering, we also cover Wellingborough (7 miles), Corby (7 miles), Rushden (9 miles).
What should you expect to pay in Kettering?
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 Kettering: questions
Can you repair a lantern someone else installed in Kettering?
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 Kettering do you cover?
As well as Kettering, we cover nearby Wellingborough, Corby, Rushden, Market Harborough and the rest of Northamptonshire.
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 Kettering
- Roof lantern leak repairs in Kettering
- Glazing bar and capping repairs in Kettering
- Solar control and self-cleaning glass upgrades in Kettering
- uPVC roof lantern repairs in Kettering
- Roof lantern respraying in Kettering
- Orangery lantern repairs in Kettering
Condensation diagnosis and fixes near Kettering
More about condensation diagnosis and fixes · All roof lantern repairs in Kettering