cellular polystyrene

cellular polystyrene

An insulation composed principally of a polymerized styrene resin which has been processed to form a rigid foam having a closed-cell structure.
References in periodicals archive ?
While EPS and XPS are two different products, they do have some similar characteristics and fall under the same manufacturing standard: ASTM C578 Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation.
different types and physical properties of cellular polystyrene intended for use as thermal insulation.
The water absorption demonstrated by the EPS insulation is within the range of the maximum threshold specified in ASTM C578 "Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation" (by less than 1%) while XPS insulation exceeds the maximum threshold by more than 18%.