Brick slip external wall insulation in Richmond
Homeowners in Richmond look at brick slip external wall insulation for warmer rooms, lower heat loss and a new exterior in one job. Here is how it works, what it costs and which England rules apply.
What is brick slip external wall insulation?
Brick slip external wall insulation is an EWI system finished with 10–20mm thick clay brick slips, bonded with adhesive onto a reinforced basecoat over the insulation and then pointed. Corner slips return around external corners so the finish reads as solid brickwork.
Brick slip EWI around Richmond
Richmond is in the TW9 postcode district, about 8 miles from London. 6 other towns we cover are within 25 miles.
Our Richmond surveys cover the TW9 district and the surrounding area, including Isleworth, Hounslow and Barnes.
Most EWI failures start at the edges rather than the middle of a wall, so the quote for your Richmond home sets out how each detail will be built.
Brick slip EWI near Richmond: Isleworth (2 miles), Hounslow (2 miles), Barnes (3 miles), Chiswick (3 miles), Heston (3 miles), Acton (4 miles).
Cost in Richmond
Guide prices for brick slip external wall insulation in Richmond run from about £185 to £265 per square metre installed, slips and pointing included; 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.
Key facts
- Bond
- Stretcher, Flemish-effect or to match
- Weight
- Heavier than render; anchor pattern checked
- Best for
- Brick streets, planning-sensitive fronts
Why choose it
- Keeps a real brick appearance
- Often an easier route through planning than render on brick streets
- Very durable, low-maintenance face
Why is a brick slip finish more expensive?
Slips are a material cost on their own, they are laid by hand course by course, corners need special pieces, and the whole face is pointed. Expect brick slip finishes to cost noticeably more per square metre than render.
More services in Richmond
- Wood fibre EWI
- Insulated cladding
- Silicone render finish
- Pebbledash & dry dash EWI
- Non-traditional houses
- Terraced house EWI
- Park home insulation
- Social housing EWI
Rules that apply in Richmond
- 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.
Brick slip EWI in Richmond: questions
Do I need planning permission for external wall insulation in Richmond?
On a house, external wall insulation is usually permitted development if the finish looks similar to the existing walls. Render or cladding on a house in a conservation area, National Park, National Landscape (AONB), the Broads or a World Heritage Site needs planning permission. Flats and maisonettes have no householder permitted development rights, listed buildings need listed building consent, and an Article 4 direction can remove rights locally.
Do you cover Isleworth as well as Richmond?
Yes. From Richmond we also cover Isleworth, Hounslow and Barnes, and the rest of Greater London.
How long will the work take in Richmond?
Two to six weeks on site for most houses, depending on size: bungalows are quicker, detached houses longer, weather allowing. Render isn't applied in rain or frost.
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