Terrafoam HS
High Strength EPS Insulation

Product Description

TERRAFOAM HS is a high compressive strength board with unusual physical properties. It is inert closed cell expanded polystyrene (E.P.S.) insulation, with excellent resistance to freeze/thaw, zero capillarity and low moisture absorption. TERRAFOAM HS is a "green" alternative to extruded polystyrene, as it uses no chemical gases that might contrite to global warming or attack the earth's ozone layer. HS will never rot, support mold or mildew and insulating properties do not degrade over time. It's compressive strength is minimum 276 kPa (40 psi).


  • Perimeter and sub-grade Installations
  • Under concrete slabs and other geotechnical applications
  • Heavy duty under-slab insulation
  • Masonry cavity walls
  • Roofs, in flat and tapered slope-to-drain
  • Floatation applications
  • Coolers, freezers, and ice arenas
  • Runways, taxiways, and aprons


  • ASTM C-578 – 09
  • CAN/ULC S 701 Type 2 (Minimum)
  • ASTM D-6817 - 07


The thermal resistance of TERRAFOAM HS is permanent! R-Value drift will occur with some insulation products because the insulating blowing gases (HCFCs) will eventually escape. Since EPS contains ordinary air, R-Value will remain the same, indefinitely.

TERRAFOAM HS is also more effective at lower temperatures. The R-Value increases as temperatures decrease. Download our brochure for additional data.

Toll free in the U.S. and Canada:

Phoning from other countries:
1 780 962 4433

Fax: 1 780 962 4640


Click here to view a location map

Beaver Plastics Ltd Head Office:
11581-272 Street
Acheson, Alberta
Canada T7X 6E9

Branch Plant Location:
Chilliwack, British Columbia, Canada

Beaver Plastics de Mexico
Uruapan, Michoacan, Mexico