Tongue & Groove 11/16" - 18

This appealing 11/16" - 18 gap siding measures 11/16" in thickness, and widths are adjusted to the required size during milling. When two pieces of lumber are joined together, they create a 3/16" wide gap/channel for decorative purposes. The profile comprises a 15/16" wide offset tongue and a 3/4" wide offset groove specifically designed for blind nailing during installation. This unique design provides a solid surface to nail. Without this offset, it raises the probability of splitting the lumber on the tongue portion due to a void area behind the tongue when nailed. In the channel portion of the pattern, there is a five-degree chamfer to allow moisture to run onto the face of the siding and away from the joining area.