What characterizes a Tongue and Groove joint?

A Tongue and Groove joint is characterized by the method of joining two boards together where one board has a protruding "tongue" that fits into a corresponding groove on the other board. This design results in a secure and precise alignment of the boards, making it an effective technique for flooring, paneling, and other applications where a tight fit is essential.

This type of joint enhances stability and minimizes gaps, which is particularly important in roofing and flooring installations to protect against weather elements and ensure structural integrity. The mechanical interlock also contributes to the aesthetic appearance of the finished surface, as it creates a seamless look.

Options that involve adjustments, flexibility, or specific use in metal roofing do not describe the characteristics of a Tongue and Groove joint properly, as this joint is specifically designed for solid, fixed assemblies rather than movable or adjustable joints.