Tongue & Groove 1/2" - 1

This 1/2" - 1 tongue & groove siding measures .500" in thickness and the width is machined to any desired size during milling. The profile comprises a 9/32" wide by 11/64" tall tongue and groove with a 1/8" by 1/8" chamfer on the side edges. When two pieces of finished milled lumber join, they create a 1/4" wide by 1/8" deep v groove on one face side of the merged boards. A .005" void area is built-in in the joint design for expansion and contraction of the wood during seasonal changes in relative humidity.