Spray foam removal, loft insulation and damp proofing in Sevenoaks
EcoTrust Roofing & Insulation Ltd has its southern office in Sevenoaks, Kent, and covers the town and surrounding villages for spray foam removal, loft insulation, loft boarding and damp proofing. Surveys for spray foam and insulation are free, and you get a written price before any work starts.
Sevenoaks
Spray foam, loft insulation and damp in Sevenoaks homes
Sevenoaks is home to our southern office, so this is local work for us. The town sits on a sandstone ridge above the Weald, next to Knole Park. The High Street and old town are a conservation area, with Kentish ragstone, red brick, tile hanging and some timber-framed buildings, and many listed houses among them.
Older Sevenoaks homes tend to have solid walls of stone or soft brick, often with lime mortar. Covering them in cement render or sealing them with the wrong paint traps moisture, and that shows up as damp patches and blown plaster. Cottages in the town and in villages like Otford, Weald and Ide Hill also have low, awkward lofts. We use breathable materials and fix the cause, not just the stain.
Much of the rest of the town is large Victorian, Edwardian and interwar houses around Kippington, the Vine and St Johns, plus post-war estates in Riverhead and Dunton Green. Big houses mean big lofts, and plenty still have thin, patchy insulation or boards laid straight on the joists. We top up to 300mm of Knauf mineral wool and fit raised boarding over it.
Spray foam turns up in Sevenoaks lofts too, often sold as a quick fix for an old roof. It covers the timbers and can trap moisture against them. Many lenders and surveyors are cautious about spray foam, which matters in a market where houses change hands often. We remove it by hand and give you a Certificate of Removal, photos and a 10-year guarantee.
Most common jobs in Sevenoaks
- Spray foam removal before a sale or remortgage
- Loft insulation top-ups in large period houses
- Damp in ragstone and solid brick cottages
- Raised loft boarding for storage
Recent EcoTrust jobs you can read in full
Real jobs, written up with photos. Each one is labelled with the town it was done in.
- Loft boarding in Lancing: 16.5m² Loft Stripped, Insulated to 300mm and Boarded on Raised Legs (West Sussex)
- Spray foam removal in Birmingham: 40m² of Closed Cell Foam Removed and Loft Reinsulated in 2 Days (West Midlands)
- Loft insulation in Southam: 30m² Loft Upgraded From 50mm to 300mm in One Day (Warwickshire)
Where we work around Sevenoaks
We cover TN13 and TN14 and the villages around Sevenoaks. Not on the list? Call 0800 870 8086, we almost certainly still reach you.
Questions we get in Sevenoaks
Do you have an office in Sevenoaks?
Yes. Our southern office is in Sevenoaks, and we cover Kent, Surrey, Sussex and nearby from there. That covers the town across TN13 and TN14, including Riverhead, Dunton Green, Otford, Weald and Ide Hill. Surveys for spray foam removal and loft insulation are free, and every job is priced in writing first.
Why do old Sevenoaks cottages get damp?
Many have solid walls of ragstone or soft brick laid in lime mortar. These walls need to breathe. Cement render, cement pointing and plastic paints trap moisture inside, which then shows as damp patches and crumbling plaster. We find the cause first and use breathable materials that suit the building.
Can you insulate a listed house in Sevenoaks?
Often, yes. Loft insulation goes inside the roof and does not change how the house looks. Listed homes and some conservation area work may still need consent, so check with Sevenoaks District Council first. We use breathable mineral wool that suits old timbers and stone, and flag anything we spot at the survey.
Is spray foam a problem when selling in Sevenoaks?
It can be. Foam on the underside of a roof hides the timbers and can trap moisture against them. Many lenders and surveyors are cautious about spray foam, so it often surfaces at sale or remortgage. We remove it by hand and give you a Certificate of Removal, photos and a 10-year guarantee.
How much loft insulation should a Sevenoaks home have?
Current guidance is around 270mm of mineral wool, and we install Knauf mineral wool to 300mm. Many large Victorian and interwar houses in Sevenoaks still have thin or patchy insulation under old boards. We clear what is needed, top it up and fit raised boarding. Insulation carries a 10-year guarantee.
What happens at a free survey in Sevenoaks?
We check the loft, roof timbers, any spray foam and any damp walls, take photos and explain what we find in plain English. You then get a written price, with no pressure. If nothing needs doing, we tell you. Damp proofing work carries a 25-year insurance-backed guarantee.
Free survey in Sevenoaks, and a price in writing
EcoTrust Roofing & Insulation Ltd. Rated 9.97 on Checkatrade, 4.9 on Trustpilot and 5.0 on Google, with 500+ spray foam removals and 35+ years of combined experience.