We live in Florida in a 4 year old house with a 1000 sq ft brick paver driveway that were in really bad shape due to poor quality. I replaced about 75 bricks, but there were still many that had lost their top cement sealant and therefore were porous. I applied two coats of the 350 sealant, but due to the poor quality of pavers, ended up purchasing a 3rd 5 gallon drum. The 3rd application really made the difference. Our driveway now has a rich color with a slight sheen and water beads off it preventing the dreaded Florida mold/mildew. Others in our subdivision have had their driveways done professionally, but ours looks just as good, if not better. It has been a month since we applied the sealant, and I hope it continues to look this good a year from now. Highly recommend this product. BTW, the customer service is knowledgeable and responded very quickly to my questions.