I've tried a bunch of different clear sealers over the years. I usually have to do it every 2 years. The whole power wash and then seal. Used Thompsons regular for years then switched to their Ultra but not real happy with it. I did it last year and just came in now, 9:00PM, from washing it again for this season. My Memorial Day project will be sealing it. Any tips on a brand you have used and are happy with? Thanks in advance Flyersarebest