What is the proper angle for cutting the end of a rafter?

The appropriate angle for cutting the end of a rafter is typically 45 degrees. This angle is used to create a proper fit at the ridge or top plate of the roof structure, which helps to ensure that the rafters join securely and support the roof load evenly. The 45-degree cut allows for a clean and strong connection, promoting structural integrity and preventing issues such as gaps or misalignment.

In roofing construction, the angle of the rafter cut can significantly impact the overall aesthetics and functionality of the roof. A proper 45-degree cut allows the rafter to lay flat against the ridge board, maximizing the surface area of the connection. This is crucial for the proper distribution of weight and helps to maintain the stability of the entire roof system.

Other angles, such as 30 degrees, 60 degrees, or 90 degrees, are not typically used for the ends of rafters as they do not provide the same level of fit or structural reliability needed in this specific application. Each angle serves different purposes in carpentry and framing, but for the end cuts of rafters, 45 degrees is the standard and most effective choice.