I'm looking for a cheap way to seal OSB from the outside elements. I am putting a hockey rink in my backyard and using a bunch of OSB I have around to use as boards. The front side of the boards will be covered with a liner, but the tops, backsides, and bottoms that will be sitting on the ground will be exposed to ground water where puddled, snow, and up and down temps. The wood will then be stored with shims between each sheet to allow them to breathe and a tarp over them to keep all the rain off during the summer months. SO my question is how do I seal them on a budget? I'd love to paint them white and yellow and maybe paint some logos into them, but again, I don't want to spend a fortune on sealing. Is there a paint I can use or a sealer that is paintable? Looking to spend no more than $60 and I'm not expecting the boards to last more than a few years. Mainly because pucks will break down the OSB before the weather does anyways. Looking at covering a total of about 900 sq.ft. Suggestions? Thanks.