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We also now include a special 2 foam roller handle with pad and mini-tray for easier application to vertical and larger surfaces. How long will it take me to do? It takes about 45 minutes to prep a standard tub, and maybe an hour to properly apply the first coat. Then 4-5 hours of drying time and then a second coat.
1 Next best is to drain the tub, leaving about 4-6 inches of water in the bottom. 2  That small amount of water wonât damage the tub when it freezes and will help keep the boards seasoned. 3  The last resort is only for when you donât want to drain your hot tub, for example if there is no fresh water supply available.