Shop EWI render system insulation boards with us, for suitable external wall insulation projects. These insulation boards are designed to form part of compatible external wall insulation (EWI) systems, helping improve a building’s thermal performance beneath a specified render finish.

Our range includes EPS (expanded polystyrene) insulation boards, including options for projects where a rendered external wall finish is required. Available products may vary in thickness, thermal conductivity and specification, allowing you to compare options according to your project requirements.

Insulation Boards for External Wall Render Systems

EWI insulation boards are installed as part of a complete system that may include adhesive, mechanical fixings, reinforcement mesh, basecoat and a finishing render. The correct board and installation method depend on the wall construction and the requirements of the selected system.

When choosing insulation boards for a render system, consider the required thermal performance, board thickness, fixing method and compatibility with the specified render components. Always follow the system manufacturer's technical guidance and relevant UK building regulations.

Order EWI Insulation Boards

Explore our external wall insulation products for refurbishment and new-build projects. Compare available board specifications and find suitable insulation for your application. We Supply insulation and building materials to trade professionals, contractors and homeowners, with UK-wide delivery options.

Need help selecting a product? Contact our team for product information or a quotation before ordering.