Kilz Masonry Waterproofing Paint
Like Zinsser, Kilz is best known for their stain blocking primers. This waterborne waterproofing paint is great for sealing concrete walls in both interior and exterior applications. It withstands 10 PSI of water pressure, as well as being mildew resistant. It can be applied over slightly damp surfaces, but new concrete must be fully cured before applying it (30 days). Like the Pratt & Lambert product, youll only get 125 square feet of coverage on smooth surfaces, with about 75 square feet on rough surfaces. It is also tintable to pastel and midtone colors.