... wraps of HVAC system, or to be used as sound/heat insulator for high-rise buildings and hotels, or ... Excellent thermal insulation materials of the steam heating pipelines, sound-proof materials in construction and the protective layer of glass wool ... of non-combustible, heat isolation, vapor barrier, mildew proof, anti-corrosion, and sound absorbability.Photo: Aluminum Foil Scrim Kraft Facing