HydroStop BarrierGuard Waterproofing is designed for waterproofing all types of masonry surfaces such as foundation walls, retaining walls, concrete panels and moisture-retaining structures such as gutters, cisterns, and concrete shrubbery boxes. Mixed with water and Portland cement, and fully reinforced with HydroStop PremiumCoat Fabric, it forms a hard-wearing, flexible compound. BarrierGuard Waterproofing is also resistant to standing water and ideal for subterranean waterproofing.