Tongue and groove

Tongue and groove is a method of joining two pieces of material, typically wood, by interlocking them. One piece has a protruding "tongue" that fits snugly into a corresponding "groove" on the other piece, creating a seamless joint. This design not only enhances stability and strength but also reduces gaps, making it ideal for flooring, paneling, and cabinetry. It allows for easy assembly and is effective in allowing materials to expand and contract with changes in temperature and humidity without compromising the connection.