TERRAFOAM® HS is a closed cell high compressive resistant polystyrene insulation product used for geotechnical service. It should be used wherever large slab loads or lateral earth forces would compress typical insulation products.

TERRAFOAM HS provides stable thermal performance for the life of the structure, without using blowing agents that contribute to global warming. It is totally CFC and HCFC free. TERRAFOAM® HS can be used in low temperature applications such as freezers and coolers, under streets and highways, airport taxiways, bridge abutments and approach slabs, plaza decks, underground parking structures, and skating arenas and curling ice. Contact Beaver Plastics for specific design considerations.

The Terrafoam High Strength HS-25, HS-30, HS-40, HS-60, HS-80 and HS-100 designations indicate maximum compressive strength in PSI. However, these values are the result of a standard test used for quality control and for monitoring manufacturing processes used throughout the polystyrene insulation industry. All expanded and extruded polystyrene products are subject to high rates of creep under sustained loading, and therefore conservative compressive resistance values should be used wherever long-term creep cannot be tolerated. For static loading, a safety factor of 1:3 is reasonable. A dynamic load calculation may use a safety reduction factor of 1:5. Consult Beaver Plastics when using our High Strength products for large volume earth displacement projects.