I have a 534 sq. ft. grey stamped concrete patio/walk. It hadn't been sealed for at least 10 years! The patio was in good shape but very dirty, dull and faded. After a thorough cleaning with a high pressure water cleaner I was ready to start applying the sealant. The sealant was very easy to roll on. I used a 9/16 crosscut 9 inch foam roller designated for use on brick & block. For the 1st coat I also used a brush (taped to a 4 ft. stick) to fill in deep spots where the roller couldn't reach. I didn't use the brush after the first coat. I was very pleased with the coverage I got. The 5 Gallon pail covered 1,410 sq. ft., enough for 2 coats and a third coat on the walkway. The sealant darkened the faded color and restored the deep sheen that I remembered when the patio was first poured. I was very pleased and would recommend this product to anyone.