Hydroduct 225 Drainage Composite is uniquely designed for resistance to heat and hydrocarbon contaminated environments. It consists of a drainage core, a high performance geotextile and a high strength backing film. The product serves as a combination drainage and protection course for all GCP waterproofing membranes. It is designed to maintain compressive strength and flow rate upon exposure to hydrocarbon contamination in the soil or in the presence of elevated temperatures.

Hydroduct 225 is a high performance geotextile and a high strength backing film. The high impact, creep resistant drainage core has a compressive strength of 21,000 Lbs./ft² (1000 kPa).