I am redoing a flat roof on a vacant building from the beams up. First the plywood then the rubber, etc.
I laid 3/4" CDX pine on the first area. Forecast was for rain so I applied a wood preserver. Then the rain came. Now I see the wood is swollen and blown up in the corners and is sort of opening up and coming apart.
Any suggestions on a better type of wood than 3/4" CDX to use? Please respond ASAP.