SuperVoid is engineered to support wet concrete during construction phase and then protects the slab from ground movement by creating a space between the slab and soil. Over time it will collapse from underlying soil forces protecting the slab. Once the structural slab is self supporting, the SuperVoid is able to collapse from the pressure of moving underlying soils. The legs are engineered with specific breaking points and the correct angle to fold together at the right place, creating consistent performance in every form. SuperVoid is tested to perform; once the form is preloaded with the weight of the slab, it collapses at acceptable uplift pressures from underlying soils. As an added benefit it also provides all the benefits of EPS insulation, protecting the slab from freezing temperatures.

SuperVoid is manufactured from expanded polystyrene (EPS) resin using a pentane blowing agent, a process does not use the hydrofluorocarbons (HFCs). The result is a high grade closed, air-filled cell structure that does not contain HFCs with a very low impact on the environment. This product is a efficient solution to protect concrete structural slab against forces of frost heave or any ground swell that may stress or damage to the slab. Its stable R-value coupled with its low moisture absorption properties while quickly releasing moisture makes SuperVoid ideal for underneath structural slabs.