External Wall Insulation Sunbury-on-Thames

External wall insulation in Sunbury-on-Thames

If you live in Sunbury-on-Thames (TW16) and your walls are solid, system-built or simply cold, external wall insulation may be the most effective upgrade you can make without losing any room inside.

From £109 per m²system and finish, plus scaffolding; VAT at 0% on homes

Homes in and around Sunbury-on-Thames

Sunbury-on-Thames is in the TW16 postcode district, about 8 miles from Woking. 6 other towns we cover are within 25 miles.

We arrange surveys in Sunbury-on-Thames (TW16) at a time that suits you, and cover neighbouring Walton-on-Thames, Hampton and Hanworth too.

We photograph every hidden layer as it goes on, so you have a record of what's behind the finish on your Sunbury-on-Thames home.

Nearby towns we cover: Walton-on-Thames (1 mile), Hampton (2 miles), Hanworth (3 miles), Ashford, Surrey (3 miles), Feltham (3 miles), Esher (3 miles).

External wall insulation prices in Sunbury-on-Thames

Guide prices for external wall insulation in Sunbury-on-Thames run from about £109 to £175 per square metre installed, depending on system and finish; scaffolding priced per house, with VAT at 0% on homes until 31 March 2027.

What moves the price most is the board and finish you choose, the access around the house, and details such as roofline extensions or moving a gas meter.

Popular services in Sunbury-on-Thames

Rules that apply in Sunbury-on-Thames

Funding: Low-income households in homes rated below EPC C can apply for Warm Homes: Local Grant where their council is taking part. The Great British Insulation Scheme closed on 31 March 2026, and ECO4 closes on 31 December 2026; its final months are for finishing and putting right existing work. Grant schemes use their own approved installers, so check a scheme's installer rules before booking; our quotes are for privately funded work unless we confirm otherwise in writing. Grants guide
VAT: Installing insulation in a home is zero-rated for VAT until 31 March 2027, then 5%.

Checked October 2026. Rules change, so we confirm them for your address at survey.

External wall insulation in Sunbury-on-Thames: questions

How much should I budget for external wall insulation in Sunbury-on-Thames?

Budget around £109–£175 per square metre of wall for the system and finish, plus scaffolding priced per house. The survey measures your walls in Sunbury-on-Thames and fixes the total in writing.

Do you cover Walton-on-Thames as well as Sunbury-on-Thames?

Yes. From Sunbury-on-Thames we also cover Walton-on-Thames, Hampton and Hanworth, and the rest of Surrey.

Which EWI system suits homes in Sunbury-on-Thames?

It depends on the walls. Most brick houses in Sunbury-on-Thames suit EPS with silicone render; older stone or lime-built walls suit wood fibre or insulating lime render; and blocks need mineral wool. The free survey recommends one and explains why.

External wall insulation in Surrey | Prices