Calsitherm, based in Germany, are a leading manufacturer of high quality calcium silicate thermal insulation materials. Founded in 1977, Calsitherm now operate globally with a commitment to creating thermal insulations as ecologically and environmentally friendly as possible. Calsitherm insulation boards provide an ideal solution to thermally upgrade and restore all solid masonry walls including heritage and protected structures. They are made from natural raw materials (sand and lime). Calsitherm Climate Board has become a go to product for professionals within the construction sector as it offers solutions for thermal bridging and unsurpassed protection against the risk of interstitial condensation. In addition, the boards are non-flammable with a fire class rating of A1.