Archetech Issue 35 2018 | Page 14

waRmsheLL insuLation A Winning oPtion A new self-build, timber frame cottage in Shropshire, benefited from a highly effective render and wall insulation system that is also suitable for a wide range of building types. Keen that the property should blend in as much as possible, they chose Lime Green products for the surface render and, whilst consulting on what products to use, the homeowners discovered that the highly effective wall insulation system – Warmshell – would be perfect for their new build. It offered an important additional benefit on a small plot over a traditional masonry build. For the same heat U-value the timber framed construction has a smaller footprint leaving more space for the garden. Consisting of a unique combination of wood fibre boards and special lime render, Warmshell works by enveloping timber frame structures in a complete layer of rigid insulation with minimal air gaps, or ‘thermal bridges’, across which cold can travel inwards. However, because Warmshell leaves walls breathable, damaging moisture won’t get trapped in the structure and a healthier environment will be created inside. For Taylor Lane who were also responsible for onsite installation of the timber frame, using Warmshell was a good solution. The 100mm wood fibre insulation boards were fitted to the outside of the stud framework and a 10mm. OSB board on the inside, onto which battens with plasterboard were fitted to form a service cavity and then finished using Lime Green’s Solo decorative one-coat plaster. The joints between the internal OSB racking boards were taped to effectively create an airtight box within the timber frame. A high level of airtightness was required as a heat recovery system was being installed. Warmshell also provides excellent insulation for heat and sound. Much Wenlock is a beautiful h istoric town in Shropshire, perhaps best known for being the birthplace of the modern Olympics. Full of gorgeous period properties and with space at a premium. When an opportunity arose to build on a plot in the centre of the