Question: how many square feet does a gallon of drylok cover?
Answer: Both DRYLOK® Original Masonry Waterproofer and DRYLOK® Extreme Masonry Waterproofer cover 75-100 square feet per gallon, and DRYLOK® Floor & Wall Masonry Waterproofer covers 90-100 square feet per gallon, depending on the porosity of the surface.