Are, Armstrong's new "Country Classic Planks" 48-in.-long x 6-in.- wide, suitable for an outside covered deck/porch, I live in west michigan and have a ten by thirty four foot,deck with a shingled roof and deck rails all around, but, no finished ceiling as of yet. I planned to go up four feet on one side, up four feet on the other, and flat ceiling the remaining twelve inches in the center, all running length-wise. This on my 28x34 1.5 story home with a 12x12 pitch roof...the deck is on the south side of our house attached to the home and open to the eleements on three sides w/2foot overhangs on those three sides..