The material has low shrinkage and high resistance to substrate corrosion. Perlite is noncombustible and operates in the intermediate and high temperature ranges. The product is available in rigid pre-formed shapes and blocks. Available in pre-formed shapes and sheets, elastomeric insulations possess good cutting characteristics and low water and vapor permeability. Elastomeric insulation is cost efficient for low temperature applications with no jacketing necessary.
Resiliency is high.
Consideration should be made for fire retardancy of the material. Check manufacturers' data. Foamed plastics are light weight with excellent moisture resistance and cutting characteristics. The chemical content varies with each manufacturer. Consideration should be made for fire retardancy of the material.