Our concrete pavers around the pool deck area had severely faded from years of exposure to the sun! It would have been very expensive to replace 1200 sq. ft. of patio, so we decided to try the new paver dyeing process by National Sealing Co. Mr. Kline was very knowledgeable about his product and put us at ease about the entire process. An appointment was promptly made, they showed up on time, explained the problem and discussed the solution. We now have a patio that looks brand new! We are extremely satisfied and plan to use National Sealing Co. for our driveway in the near future. If you want your patio pavers to look brand new again, I highly recommend using National Sealing Co.