I have sealed pavers for nearly 20 years.I think I've tried nearly every brand and base type (xylene-water) I settled on using a PPG product.I could get an HONEST 4 yr. longivity thru my procedure.All you Florida guys know the gov. have been trying to ban xylene for the last 15 yrs. A year and a half ago you could'nt evan get a xylene product.All suppliers turned us to water-based sealers and promised the world.They Failed miserably.Xylene was brought back but it's NOT the same product.I use my same procedures and I'm getting crap results.I cornered a sales rep. and he admitted the products were reformulated.I've noticed in the last year ANY pavers sealed in this area are milking out.Has anybody found anything that works?I'm experimenting with a soloxthane product at present.To early to tell.They ALL look good short term.