Everbuild Febtank Super Waterproof Tanking Slurry Coating For Concrete And Masonry When Mixed With Clean Water, Forms An Extremely Durable To Both Positive And Negative Water Pressure Waterproof Coating For Concrete And Masonry Which Is Easily Applied To A Internal Or External Surface By A Stiff Hand Brush, Broom Or Spray. Ideal For Use Above Or Below Ground Such As When Waterproofing Basements, Foundations, Tunnels, Floors Or Walls In Shower And Bathroom Areas Or Swimming Pools. Once Set Febtank Super May Be Covered With A Decorative Finish Or Left Uncovered.