Stop in for a cup of coffee

Just some pine - be lighter and survive getting drenched. Anyone stock 'barn siding' or 'roof boards' in 5/4 or 4/4 with just the top surfaced?
The other one is just thin plywood and holding up great. Exterior plywood or even painted interior will hold up a long time as long as it is not saturated and left in direct sun. That particle board crap is like a sponge though.