Knauf Marmorit’s Warm Wall external wall insulation with a smart, low maintenance mineral finish render is enhancing the energy efficiency and external appearance of over 200 homes in the Castlefields area of Runcorn. The refurbishment, on behalf of two housing associations – Liverpool Housing Trust and neighbourhood investor, Plus Dane Group – is part of a £150 million project to transform the 1980s estate into a vibrant community with a sustainable future.

Terraced housing with outdated plastic cladding and painted concrete exteriors is being upgraded with around 20,000m² of Mamorit’s Warm Wall Basis, a cost-effective solid wall insulation system which cuts energy costs by reducing heat loss through the external
façade. An attractive, long lasting external finish is provided by Marmorit’s Noblo marbleaggregate finish render. Given Castlefields’ proximity to an industrial estate and resulting air pollution, which had deteriorated the original façades, the render surface is coated with a silicon self-cleaning effect paint. This greatly reduces the adherence of dust and dirt particles, so the surfaces will stay cleaner for longer with minimal maintenance.