Render and external wall insulation

We apply traditional and modern render systems and external wall insulation (EWI) on new SFS walls and existing buildings. Because we also frame and board the wall, render becomes part of one façade package rather than a separate trade.

Corner of the new block at Cobham Free School: cream render above a brick plinth, with the school crest
Cobham Free School, Phase 2: SFS, CP board with fire barriers, GeBrik and external render.

Render systems we apply

  • Side elevation of a cream rendered school block with tree shadows on the render

    Render on carrier board

    Render on a board fixed to SFS, adding fire protection and water resistance.

    Pictured: Cobham Free School, Phase 2.

  • Warm off-white one-coat render with a fine scraped texture around a deep window reveal with a grey frame (illustrative image)

    Monocouche render

    A one-coat, through-coloured render applied by hand or by machine.

  • Brick house partway through external wall insulation: white insulation boards with fixings, then mesh-reinforced basecoat, then finished pale grey render (illustrative image)

    Insulated render (EWI)

    A layer of insulation fixed to the wall and finished in render.

  • Floated sand and cement render painted warm white above a red brick plinth with a bellcast bead, beside a sash window (illustrative image)

    Sand and cement render

    Traditional render for masonry and existing walls.

  • Ground floor of a terraced townhouse in pale render scored into stone blocks, with a black door, sash window and railings (illustrative image)

    Ashlar render

    Features cut into the render to create a stone-block finish.

  • Corner of the rendered sports hall at Cobham Free School above a brick plinth, with tree shadows on the render

    New and existing walls

    Installed on our own SFS or on existing walls.

    Pictured: render on the sports hall at Cobham Free School, Phase 2.

External wall insulation (EWI)

EWI wraps the outside of a building in insulation finished with render. It improves thermal performance without losing internal floor area, which makes it useful on refurbishment and recladding projects as well as new-build.

Cream rendered wall with high-level windows above a brick plinth at Cobham Free School
Render above a brick plinth at Cobham Free School, Phase 2.

Render as part of the façade

On new-build projects we install the SFS, carrier board, fire barriers and render as one sequence. That removes the handover between framing and render trades and keeps responsibility for the finished wall with one company.

SFS (steel framing system)
One sequenceFrame to render
  1. SFSMade in our Rainham factory
  2. Carrier board
  3. Fire barriers
  4. RenderThe finished wall

Render and EWI projects

Key facts and our scope for each package.

View all render projects
Timber-clad and rendered teaching block at Hoe Valley School, Woking

Education · 2018

Complete

Hoe Valley School

Location
Woking
  • SFS
  • External board
  • Render
  • Acoustic panels
  • +2 more: Ceilings, partitions
Aerial view of Cobham Free School: a cream rendered block with the school sign, above a brick base

Education · 2020

Complete

Cobham Free School, Phase 2

Location
Cobham
  • Strip-out
  • SFS
  • CP board
  • Flashings
  • +6 more: GeBrik cladding, render, ceilings, partitions, acoustic panels, fire stopping
Red rendered block with louvred windows at Eltham Community Hospital

Healthcare · 2016

Complete

Eltham Community Hospital

Location
Eltham
  • SFS
  • External board
  • Render
  • Acoustic panels
  • +2 more: Ceilings, partitions
Courtyard between white rendered wings, with wrapped materials on the ground.

Education · 2017

Complete

Oasis Academy Arena

Location
South Norwood, Croydon
  • SFS
  • External board
  • BTS rainscreen
  • Insulated render
  • +3 more: Acoustic panels, ceilings, partitions
Dark grey cladding with the BEB2 name, behind site fencing.

Education · 2015

Complete

Nescot, Phase 3

Location
Epsom
  • SFS
  • CP board
  • Render
  • Acoustic panels
  • +2 more: Ceilings, partitions

Pricing render or EWI?

Send the elevations and specification. We will price the render on its own or with the SFS and boards behind it.

Render and EWI questions

Anything else? Call 01708 554777.

What is render on carrier board?

A render system applied to a board fixed to the SFS or substrate. It gives a rendered finish on a lightweight wall and adds fire protection and water resistance.

What is the difference between monocouche and traditional render?

Monocouche is a one-coat, through-coloured render that can be applied by hand or machine. Traditional sand and cement render is built up in coats and usually painted.

Can EWI be installed on an occupied building?

EWI is installed from the outside, so internal space is not lost. Access and sequencing are planned with the main contractor and the building's users.

Do you install the SFS and boards behind the render?

Yes. We can deliver the full build-up (SFS, carrier board, fire barriers and render) as one package.

Computer-generated illustrations and renders, not photographs of our projects.