This standard specifies thermally homogeneous architectural insulation and insulation materials, and methods for determining the declared and design values of thermal performance of products. This standard also provides procedures for converting performance values obtained under certain conditions (set conditions) such as temperature and moisture content into performance values under different conditions such as temperature and moisture content. These procedures are valid at ambient temperatures from -30°C to +60°C.
JIS A 1480:2002 history
2002JIS A 1480:2002 Thermal insulating materials and products for buildings -- Procedures for determining declared and design thermal values