Guinness Hermitage (GH) was created in April 2007 with the amalgamation of the Parchment Group, Kennet Housing Society and The Guinness Trust west region.
GH operates in the South and West of England and manages around 15,000 homes. As part of its commitment to improving housing standards and reducing carbon emissions, GH is investing in the external refurbishment of its “hard to treat” solid brick wall properties, through Plymouth Hard To Heat Homes scheme.
GH wanted to trial an External Wall Insulation (EWI) system on a block of four terraced properties before rolling out a full scale programme. The trust wanted a system that was cost effective and one that would:
• Allow residents to remain in their homes during the work
• Improve the thermal performance of solid walls
• Reduce CO2 emissions and lower residents’ fuel consumption
• Improve the external appearance of the houses
GH chose to specify a Hanson Structherm External Wall Insulation system. This consisted of a layer of high performance, 60mm thick, Phenolic insulation boards fixed directly back to the brick walls. The “High Build” render system was then applied, which was made up of two layers of 3mm basecoat render with polypropylene reinforcing mesh embedded. To complete the system the client chose a high performance through coloured Silicone render finish, to provide a modern and fresh look to the property.
||Solid 9" Brickwork
||External Wall Insulation
& Render Finish
• The External Wall Insulation was installed while residents remained in their homes.
• Thermal performance has improved greatly with the U value of the walls dropping from 2.31W/m2K to 0.29W/m2K
• The carbon footprint has reduced as it now requires less fuel to heat each home to a comfortable temperature.
• The aesthetic appearance of the properties has greatly improved as the refurbishment programme also included new roof, soffits, fascia boards and guttering.