i wanted to repaint the old bench on my patio and make it look like new. i went to the local paint store and the guy told me to sand the wood down, clean it off and use Ultimate Zar Plus. it is a wood stain and polyurithane in one. he said it would save me a step. however, my uncle came by to look at the bench and he said that Zar plus is for interior wood. i spent 4 hours sanding and painting this bench and dont want to have to redo this again. i would assume it would take a lot longer to sand it this time. is there anything i can do to save me some time? can i just apply a sealant to weather proof it? i really like the color and would like to keep it.