Group C · External wall insulation and render
EWI with brick slip finish
External wall insulation finished in brick slips so it looks like real brick.
Price by property type
EWI with brick slip finish
- Mid-terrace£12,000–£20,000
- Semi / end-terrace£18,000–£32,000
- Detached£26,000–£45,000
- Bungalow£16,000–£27,000
- Flat / block£170–£280 per m²
Before grants · updated 11 October 2026 · a survey confirms the final figure.
- Best for
- Brick streets and conservation-sensitive areas
- Guarantee or standard
- System guarantee
- Time on site
- EWI on a typical house usually takes a few weeks including scaffolding, depending on size, detailing and weather.
- Typical price
- From £12,000
What it is
What is EWI with brick slip finish?
External wall insulation finished in brick slips so it looks like real brick.
Best for: Brick streets and conservation-sensitive areas.
Build-up
External wall insulation system
- 1Existing wall
- 2Adhesive and mechanical fixings
- 3Insulation boardEPS, mineral wool, phenolic, wood-fibre or cork
- 4Base coat with glass-fibre mesh
- 5Render or brick slip finish
Who it suits
Which homes is EWI with brick slip finish suitable for?
Is my home suitable?
Pick your property type for a straight answer on EWI with brick slip finish.
Guidance only — every home is different, and a survey confirms what suits yours.
Houses
- Detached house
- Semi-detached house
- End-of-terrace
- Mid-terrace
- Townhouse
- Mews house and cottage
- Detached bungalow
- Semi and terraced bungalow
- Chalet and dormer bungalow
- Period home
- 1930s home
- Post-war and ex-council house
- Non-traditional / system-built
- Farmhouse, barn conversion or rural home
- New build or self-build
- Park and mobile home
Flats and blocks of flats
Commercial and public buildings
Usually suitable Depends — a survey confirms
Not usually suitable for 3 property types
- Listed building or conservation area — Listed buildings need consent, and fronts in conservation areas need planning — breathable IWI or thermal lime render are the usual routes.
- Purpose-built flat — A single flat can't have EWI on its own: the outside walls belong to the building, and flats have no permitted development rights for EWI. It's done as a whole-building project.
- Mansion block — A single flat can't have EWI on its own: the outside walls belong to the building, and flats have no permitted development rights for EWI. It's done as a whole-building project.
Materials and brands
What we use
Certified EWI build-up finished with brick slips — key for conservation-sensitive streets.
EWI and render brands we work with
- Sto
- Weber
- K Rend
- Wetherby
- Parex
Insurance-backed EWI usually requires approved-installer status with the system holder. The exact system and brand for your home are confirmed in your written quote.
Heat, bills and EPC
What it does for your heat loss, bills and EPC
Solid and system-built walls lose far more heat than insulated cavity walls. Wrapping them in insulation lowers the wall's U-value, keeps the masonry warm and dry, and reduces cold bridging at floors and junctions — for a solid-wall home, often the biggest single EPC improvement available. Render alone does not change the wall's U-value.
See the EPC points and savings for your home in the EPC plannerU-value before and after, typical heat and bill saving, and EPC points — worked out for your property.Price
How much does EWI with brick slip finish cost?
Prices change with your property type. Pick your column — the quote builder then refines it for your home.
| Measure | Mid-terrace | Semi / end-terrace | Detached | Bungalow | Flat / block |
|---|---|---|---|---|---|
| EWI with brick slip finish | £12,000–£20,000 | £18,000–£32,000 | £26,000–£45,000 | £16,000–£27,000 | £170–£280 per m² |
Indicative ranges for London and the South East, supplied and installed, including VAT, before grants. Updated 11 October 2026. A survey confirms your final price.
0% VAT on energy-saving materials
Insulation, solar panels, batteries and heat pumps installed in homes in Great Britain are zero-rated for VAT until 31 March 2027. Windows and doors are not included.What to expect
Time on site, disruption and approvals
Time on site
EWI on a typical house usually takes a few weeks including scaffolding, depending on size, detailing and weather.
Disruption
Most of the work happens outside, so you stay in your home. Scaffolding is up for the duration, and downpipes, meters, lights and satellite dishes are moved and refitted.
Planning and building control
Houses often don't need planning permission when the finish is similar to the existing walls, but an application may be needed where the appearance changes, on fronts in conservation areas, or under an Article 4 direction. Flats have no permitted development rights for EWI. EWI is building work, and we handle building control.
Guarantee and standard
System guarantee. The guarantee and certification for your job are confirmed in writing in your quote.
60-second grant check
Could a grant help pay for it?
Grant eligibility checker
About 60 seconds · plain results: likely, possibly or not eligible
Before we start
What type of property is it?
Questions
EWI with brick slip finish: your questions answered
How much does EWI with brick slip finish cost?
Typical installed prices in London and the South East, including VAT and before any grant: £12,000–£20,000 for a mid-terrace; £18,000–£32,000 for a semi-detached or end-of-terrace house; £26,000–£45,000 for a detached house; £16,000–£27,000 for a bungalow; £170–£280 per m² for a flat. Prices updated 11 October 2026. A survey confirms your final figure.
What is a brick slip finish?
Thin slices of real brick, or brick-effect slips, bonded to the EWI system and pointed like brickwork — so the wall looks like brick but is insulated like an EWI system.
Why choose brick slip instead of render?
On brick streets and in conservation-sensitive areas, brick slip keeps the character of the street, which can make planning easier where a change of look would be resisted.
Does brick slip cost more than render?
Yes — it's more labour-intensive. Our price table shows render and brick slip side by side for each property type, so you can compare.
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Begin your project
Price EWI with brick slip finish in two minutes
See a price range for your property type, with grants and 0% VAT applied where they fit. A survey always confirms the final figure.