Perlite insulation is an inorganic material that, when expanded, takes on an almost foam-like internal structure, making it an extremely efficient, low density insulator. Perlite insulation is non-combustible and resistant to corrosion under insulation. It is also resistant to oil and water absorption. It can be used in cryogenic and high temperature applications or areas in which high humidity or high rainfall is an issue. Distribution International is a perlite insulation supplier offering perlite products for thermal insulation and fire rating purposes. We have fabrication facilities across North America that can create custom perlite products to fit any pipe, elbow, or fitting. View our selection of perlite insulation by category below!