Xypex Concentrate in a 60 lb. pail is ideal for projects of 400 sq. ft or less. Rule of thumb is 6-7 sq. ft per pound but may vary depending on the surface. Xypex Concentrate is the most chemically active product within the Xypex Crystalline Waterproofing System. When mixed with water, this light grey powder is applied as a cementitious slurry coat to above ground or below ground concrete, either as a single coat or as the first of a two-coat application. It is also mixed in Dry-Pac form for sealing strips at construction joints, or for the repairing of cracks, faulty construction joints, and honeycombs. Xypex prevents the penetration of water and other liquids from any direction by causing a catalytic reaction that produces a non-soluble crystalline formation within the pores and capillary tracts of the concrete and cement-based materials. Advantages Resists extreme hydrostatic pressure Becomes an integral part of the substrate Can seal hairline cracks up to 0.4mm Allows concrete to breathe Highly resistant to aggressive chemicals Non-toxic Does not require a dry surface Cannot puncture, tear or come apart at the seams No costly surface priming or leveling prior to application Does not require sealing, lapping and finishing of seams at corners, edges or between membranes Can be applied to the positive or the negative side of the concrete surface Does not require protection during backfilling or during placement of steel, wire mesh or other materials Less costly to apply than most other methods Not subject to deterioration PermanentRecommended For: Reservoirs, Sewage and Water Treatment Plants, Underground Vaults, Secondary Containment Structures, Foundations, Tunnels and Subway Systems, Swimming Pools, Parking Structures and Roof DecksXypex Product Data Sheet Xypex Concentrate SDS SheetCarcinogenicity: This product contains silica sand and this form of silica is not classfied as carcinogenic due to its large particle size. However, prolonged and / or massive exposure to respirable crystalline silica-containing dust is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.