Render finishes

Insulated render systems

Insulated render is external wall insulation with a render finish — insulation board, reinforced base coat and a decorative render tested together as one system. It gives the look of a modern rendered house while bringing the wall up to current insulation standards.

One system: board, adhesive, fixings, mesh, primer and render
Through-coloured finishes in hundreds of shades
Contrasting colours for bands, plinths and features
Combines a new look with lower heat loss
Suitable for houses, extensions and whole buildings
Designed and tested by the system manufacturer

Get a guide price See prices

A modern detached house in crisp white insulated render with a charcoal grey render entrance bay

Free survey for insulated render

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Is insulated render the same as EWI?

Yes — insulated render is the everyday name for a rendered EWI system. Some people also use it for thin thermal renders containing aerogel or cork, which are applied 20–40mm thick on heritage walls. They insulate far less than board systems, so we treat them as a specialist option.

Typical build-up

Board options: EPS, mineral wool, wood fibre, phenolic
Finish: Thin-coat silicone, acrylic or mineral render
Grain size: Typically 1–2mm
Colours: Through-coloured; contrasting details possible
Typical U-value: ≈0.25–0.30 W/m²K on solid brick

Can I choose two colours?

Yes. Many owners pick a main colour with a contrasting plinth, entrance surround or bay. Feature bands and recessed details can be formed in the insulation before rendering.

The layers of an insulated render system on a gable wall.

What texture will it have?

Thin-coat renders come in grain sizes, typically 1–2mm. A 1.5mm grain is a common middle ground: fine enough to look smooth from the street, coarse enough to hide minor imperfections.

Insulated render systems prices

Insulated render systems guide prices
Item	Guide price	Notes
Insulated render (EPS + silicone)	£105–£145 per m²0% VAT	Excluding scaffold
Mineral wool insulated render	£125–£170 per m²0% VAT
Contrasting colour features	+£8–£20 per m²0% VAT	Where used

Guide prices are confirmed by a fixed written quote after a free 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 free on 0800 088 6248.
Free survey
We measure the walls, check condition and confirm planning and building control.
Fixed written quote
The system, details, access, exclusions and VAT, in writing. Anything hidden is priced and agreed before extra work.
Installation and handover
Work planned around the weather, then inspected and documented.