Flats and blocks · Kent
EWI for flats and blocks in Sevenoaks
If you're planning EWI for flats and blocks in Sevenoaks, start with a free survey: we measure, check the walls and confirm planning and building control for your address. Freeholders and managing agents in Sevenoaks get a written specification and pricing they can share with owners.
- Free survey in TN13 and nearby
- Guide price from £110 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Sevenoaks
Postcode, service and a phone number is all we need.
What you get
- Higher-risk buildings follow the Building Safety Regulator's process in England
- One programme and one finish across the whole building
- Cavity barriers and fire-stopping detailed at compartment floors
- Mineral wool systems where building height or guidance requires them

Sevenoaks: walls, weather and approvals
We also cover Tonbridge and Swanley, close to Sevenoaks. It's roughly 14 miles from Sevenoaks to Maidstone, the largest town in Kent. Homes across the South East range from inter-war semis and post-war estates, which are mostly cavity-walled, to older solid-walled cottages and Victorian town terraces.
Much of Kent sits in the lower wind-driven rain exposure bands, which keeps the choice of finishes wide — though hilltop, coastal and exposed gable walls can still need a tougher specification, so we check the actual site.
For blocks in Sevenoaks, we start with height, storeys and the planning position, because those decide the system.
- Postcode district
- TN13
- County or area
- Kent
- Nation
- England
- Nearby
- Tonbridge, Swanley, Tunbridge Wells, Chislehurst
Approvals in England
Planning in Sevenoaks follows England's national rules: similar-looking finishes on houses are usually permitted, while flats, commercial premises, conservation areas and streets under an Article 4 direction need an application.
If the work covers more than half of a wall, or a quarter of the building's whole envelope, it counts as renovating a thermal element, with a target of about 0.30 W/m²K where feasible.
On residential buildings with a storey 11 metres or more above ground, guidance points to non-combustible external wall materials, and combustible materials are banned in relevant buildings 18 metres and over, so we specify mineral wool systems there.
Who needs to agree to EWI on a block?
The freeholder or management company commissions the work, but leaseholders usually pay through the service charge. In England and Wales, major works above the statutory threshold trigger the Section 20 consultation process before a contract is placed. We provide the specification and pricing you need for that consultation.
EWI for flats and blocks prices in Sevenoaks
| Item | Guide price | Notes |
|---|---|---|
| Mineral wool system on a low-rise block | £110–£190 per m²0% VAT | Priced on survey |
| Scaffold and access | Priced per building | Includes licences where needed |
| Specification and pricing pack for consultation | Included with quote |
Confirmed by a fixed written quote after survey. 0% VAT: installing insulation in a home is zero-rated until 31 March 2027, so these figures are the total; 5% applies from 1 April 2027.
How it works
Tell us about the property
Use the quote tool or form, or call. Photos help.
Free survey
We measure, check the walls and confirm approvals.
Fixed written quote
System, details, access, exclusions and VAT in writing.
Installation
Scheduled for suitable weather, with a clear programme.
Flats and blocks in Sevenoaks: questions
Do you work on high-rise buildings?
Tell us the height and number of storeys. Buildings in the higher-risk category have a separate regulatory route, and we'll say plainly if we're not the right contractor.
Can one flat have external wall insulation on its own?
Rarely. The outside walls are usually owned by the freeholder, the result would look patchy, and planning is unlikely. Whole-building schemes are the norm.
Who pays for EWI on a leasehold block?
In England and Wales, usually the leaseholders through the service charge, depending on the lease, and the landlord must follow the Section 20 consultation process for major works.
Do you cover Sevenoaks?
Yes — we survey and quote EWI for flats and blocks in Sevenoaks (TN13) and nearby Tonbridge, Swanley and Tunbridge Wells, with a fixed written price before any work starts.