Thermal insulation for use in pitched roof spaces in dwellings. Specification for man-made mineral fibre thermal insulation in pelleted or granular form for application by blowing|Marking, Thickness measurement, Corrosion, Thermal testing, Domestic facilities, Pitched roofs, Electrical safety, Humidity, Flammability, Particulate materials, Density, Thermal conductivity, Roof spaces, Glass fibres, Thermal insulating materials, Man-made fibres, Thickness, Impurities, Vibration, Pellets, Mineral fibres