ARC WP2001-TNK Tank 10 Waterproofing Compound, 1-Gallon Thick consistency is easy to spread and builds-up quickly Dark gray color contrasts with tile layout lines for high visibility Faster and easier installations compared to fabric-type waterproofing systems Bonds stubbornly to GRP, tile backer, plywood, drywall, and many other materials Tank/10 formulated and made in the USA