What is the purpose of a heel cut in roofing?

The heel cut in roofing primarily serves to ensure a proper fit of rafters on walls. This technique involves cutting the end of a rafter at an angle, allowing the rafter to sit securely and properly against the wall plate. This alignment is crucial for maintaining the structural integrity and stability of the roof system.

By achieving a snug fit, the heel cut helps to distribute loads effectively, prevents potential gaps that could lead to air leakage or water ingress, and contributes to the overall performance of the roofing system. Additionally, a well-executed heel cut supports the correct angles and pitches necessary for the roof design.

While considerations like aesthetics, drainage, and insulation are important in roofing, they are not the primary functions of a heel cut. Instead, the heel cut specifically targets the interaction between the rafters and the supporting walls, thereby playing a essential role in roof construction.