PortaGuard is a temporary flooring membrane that provides strong protection of soils from contamination. It has a bursting strength of 950 lbs, can withstand hydrostatic pressures up to 800 psi, and shows no material changes after 8,000 hours of weathering. PortaGuard is also lightweight at 3.33 oz per square foot, can be shipped in rolls up to 50 feet wide and 600 feet long, and is the most durable environmental protection membrane in the industry. It is made in the USA from polyester fabric and a tri-polymer alloy coating.