Tongue & Groove 1-1/2"

This double 1-1/2" v-groove decking/siding measures 1.500" in thickness, and widths are simply adjusted to any desired size during milling. The good-looking profile consists of a 1/2" wide by 7/16" groove with a 3/8" wide chamfer on both edges and a 7/16" wide by 3/8" tongue with a 3/8" double chamfered edges. 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 milled lumber are joined, they create a 3/4" wide by 1/4" deep v-groove between the merged planks.