Tongue & Groove 1-1/2" - 19

This 1-1/2" - 19 gap roof decking measures 1.500" in thickness, and the width can be produced to any desired size within the parameters of the molder or shaper used to mill the pattern. The decorative profile is comprised of a 3/8" wide by 7/16" tall tongue and a 7/16" wide by 1/2" deep groove with a 1/8" wide offset, there is a .062" void in the joint area for expansion and contraction of the wood during seasonal changes in relative humidity. When two pieces of lumber are joined together they create a 1/8" wide by 1/2" deep channel between the merged boards.