Subterra Protection Board products feature EPS (HS) rigid foam sheathing covered with polypropylene woven fabric on both sides. The insulation is crafted from either EPS (expanded polystyrene) or GPS (expanded polystyrene containing graphite). When installed as per our Installation Guide, Subterra Protection Board offers outstanding RADON barrier protection.
Here are the benefits of Subterra Protection Board when installed under slabs:
- Acts as continuous insulation, minimizing heat loss through the slab.
- Lightweight and easy to cut for precise fitting in any space.
- Effectively prevents radon infiltration, offering superior resistance compared to standard 6 mil polyethylene.
- Provides excellent water resistance, capable of withstanding over 2 feet of standing water.
- Serves as an air and vapor barrier, replacing traditional polyethylene membranes.
- Flexible, resilient, and durable under heavy loads and construction traffic without warping.
- Installation is quick, straightforward, saving both time and labor.
- Ensures a safe, non-slip surface.
Products utilizing GPS technology offer up to 18% higher R-value than conventional EPS.
Available Sizes:
- Sheets are available in 4ft x 8ft dimensions, ranging from 1/2”, 3/4”, 5/8”, 1”, 1.5” to 2” thicknesses.
- Custom sizes are also available upon request.
