Rafters, Common

Definition

Common rafters are those which run square with the plate and extend to the ridge.

Purpose

The purpose of common rafters is to provide primary support for the roof decking and roofing materials, forming the main framework of a sloped roof.

Examples of Use

• Common rafters are used in gable roofs, running from the wall plate to the ridge to support the roof structure.
• In hip roofs, common rafters extend from the wall plate to the ridge, providing the primary support along the roof's main slope.
• Common rafters are essential in traditional and modern roof designs, forming the basic framework for the roof covering.

Related Terms

• Rafter: A framing member that runs up and down the slope of a pitched roof.
• Ridge: The horizontal line at the top of the roof where the rafters meet.
• Hip Rafter: The diagonal rafter at the junction of two roof planes.

Notes

Common rafters must be accurately cut and installed to ensure the stability and durability of the roof, particularly in load-bearing and weather-resistant structures.