Expanded Perlite provides a quick, inexpensive and permanent method for insulating masonry walls. Depending upon design conditions, reductions in heat transmission of 50 percent can be obtained when perlite loose fill is used in the hollow cores of concrete block or cavity type masonry walls. Perlite is a non-combustible, industrial mineral yielding superior dynamic thermal performance.
Expanded Perlite is an inorganic product that does not support combustion or rot. It is ideal for use under concrete slabs, in chimneys and in high-temperature applications such as pizza ovens and rocket stoves.