This CERT specifies test methods for determining the compressive properties of rigid cellular materials, such as foams. ASTM D1621 helps ensure these materials meet structural requirements, providing reliable data on compressive strength and behavior under loads, essential for construction and industrial applications.

This CERT designates compliance with California’s Title 24 (T24) building standards under CALGreen, which emphasizes energy efficiency, sustainability, and environmental performance in building construction. T24 compliance ensures that buildings meet stringent standards for reducing environmental impact and promoting resource conservation.