Tongue & Groove 1-1/2" - 17

This decorative 1-1/2" - 17 v-gap siding measures 1.500" thickness, permitting the detail to be machined out of eight-quarter lumber. The width is adjustable to any desired size within the parameters of the moulder or shaper used to cut the pattern. The standard profile is composed of a 1/2" tall by 3/8" deep tongue and groove with a 3/32" tall & wide forty-five-degree chamfer on the top edge. There is a .031" void built into the joint area for expansion and contraction of the wood during seasonal changes in relative humidity. When two pieces of lumber are joined, they create a 3/16" wide by 3/32" deep v-groove between the merged boards.