Underfloor insulation for New Malden properties
New Malden is among the towns we cover in Greater London, alongside Surbiton, Morden and Wimbledon. It is roughly 9 miles south-west of London.
In New Malden homes this is often done on the same visit as a cavity fill, which saves a second trip. We check ventilation as carefully as insulation in New Malden homes, because both matter for keeping a house dry.
For regulations, if cavity wall insulation follows in New Malden, filling a cavity is notifiable building work and needs a building notice or competent-person self-certification.
Funding in England
In England, ECO4 runs to 31 December 2026 and Warm Homes: Local Grant supports low-income households through councils.
Sources: GOV.UK: extending the ECO4 end date, government response; GOV.UK: Warm Homes Plan.
Keeping the void ventilated
Air bricks under a suspended floor must stay clear so the timbers stay dry. Insulation goes between the joists, not across the void, and gaps at skirtings are sealed to stop draughts.
What is included in New Malden
- Draught sealing at skirtings
- Insulation between joists
- Boards relaid
- Floor void inspection
Guide prices for New Malden
| Underfloor insulation guide prices | Guide price |
|---|---|
| Suspended timber floor, typical room | £795–£1,495 |
| Whole ground floor | £1,995–£3,995 |
No VAT is charged on installing insulation in homes until 31 March 2027 (then 5%). Guide ranges only: the fixed price is confirmed in writing before any work starts, and anything that could not be seen at survey is agreed with you first.
The steps for underfloor insulation in New Malden:
Get in touch
Online, by phone or WhatsApp.
Survey visit
We check the space, what is there now and how it is ventilated.
Your quote in writing
A fixed price, with any extras listed separately.
Booked work
Carried out by the installer named on your quote.