Is this product suitable for external walls?

No — EPS Insulated Plasterboard is designed for internal drylining applications only, such as upgrading thermal performance on solid internal walls, ceilings, and partitions. It is not suitable for direct external use, as it must be kept dry and protected from weather exposure.

For external walls, we recommend using a dedicated external wall insulation board which is designed to meet UK Building Regulations for external applications.

You can find both internal and external insulation solutions at MGN Builders Merchants branches in Romford, Woodford, and Orpington, with delivery available across London, Essex, Kent, and the South East.