Halo® Subterra Plus®
Perfectly Designed For Below Ground Applications
Subterra® Plus offers a high-performance GPS core that is laminated on both sides with an extra-tough crosswoven laminate.
Key Performance Advantages
waterproofing protection
Helps drain water away from foundation walls and protects waterproofing.
Energy Efficient
Continuous GPS insulation creates a thermal break and eliminates the energy loss from thermal bridging in the wall assembly.
Super-Flexible
Subterra Plus® is super-flexible and easily conforms to radius walls without needed time consuming field cuts.
Surprisingly Durable
Subterra Plus® is incredibly jobsite tough - it withstands severe foot and equipment traffic without breaking.
RAdon Barrier
Per the NRC's Radon Diffusion test, Subterra Plus® is a radon barrier with 7 times higher radon resistance than 6 mil polyethylene membranes.
Learn more about Halo SUBTERRA ®
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Subterra Plus®
Board Size
Board Thickness
R-Value
Compressive Strength psi (KPA)
4 ft x 8 ft
1230mm x 2460mm
1-1/16”, 1 5/8”, 2-1/8”
27 mm, 41 mm, 54 mm
R-5, R-7.5, R-10
16 (110) / 20 (140) / 25 (172) / 30 (210) / 40 (276)
Additional thicknesses may be offered regionally. Custom thicknesses and compressive strengths are available upon request.
Subterra Plus®
Board Size
4 ft x 8 ft
1230mm x 2460mm
Board Thickness
1-1/16”, 1 5/8”, 2-1/8”
27 mm, 41 mm, 54 mm
R-Value
R-5, R-7.5, R-10
Compressive Strength
psi (KPA)
16 (110) / 20 (140) / 25 (172) / 30 (210) / 40 (276)
Subterra Plus®: Incredibly Tough & Unbreakable
Subterra Plus® is available in certain regions only.
Please confirm local availability.
Foundation Walls
Under Slab
