dadster4
Gold Member
I would have all your lumber brought to a woodshop to be trued, squared up, finish sanded, relief grooves cut on the bottom side, and tongue and grooved. If not, you will have gaps between boards, and a very uneven surface with sharp edges. The boards will expand and contract with changes in humidity no matter what you do, that's what the tongue and groove joint is for, and will allow you to blind-nail it down through the tongue. NO GLUE! That will split your boards for sure. It would probably be best to limit the width to 8" or less to help control the amount of movement.