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Wall Build-Ups

EWI Pro systems are built to last, offering a range of external wall solutions for improving thermal comfort and external appearance. The following are some typical external wall insulation systems using EWI Pro materials. As demonstrated, our systems are highly versatile and can be used to create numerous external wall insulation systems for a range of properties and substrates.

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Insulated Concrete Forms (ICF) Render Only image

Substrate Preparation

The substrate must be clean, dry and dust free.

Parge Coat

A parge coat must be applied to the substrate to prime and level the surface. The EWI-269 Lightweight Basecoat can be applied up to 10mm thick to create a parge coat.


Before rendering, the basecoat reinforcement layer must be applied. This consists of the EWI-225 Premium Basecoat, which is used to create a smooth and flexible surface.

Fibreglass Mesh

Fibreglass Mesh is embedded within the basecoat adhesive to reinforce the render system and enhance its tensile strength.

Render Primer

The render primer is painted onto the reinforcement layer to ensure that the render adheres to the basecoat, and to contribute towards a durable render finish.

Decorative Finish

EWI Pro offer a range of coloured renders, all of which can enhance the external appearance of the property. Each render provides a long-lasting, crack-proof finish and come with a range of advantages for the building structure.

  • Substrate Preparation
  • Parge Coat
  • Basecoat
  • Fibreglass Mesh
  • Render Primer
  • Decorative Finish
Insulated Concrete Forms (ICF) Render Only

EWI Pro render systems are ideal for insulated concrete form (ICF Jackon) substrates as they are extremely crack resistant. Our thin coat renders are available in a wide range of colours and textures to create a high performance and aesthetically pleasing finish.

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