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The labor costs associated with trusses are also lower, as they don’t require the skilled labor of an expert carpenter.

They use lighter materials and are able to be produced and purchased in large quantities, driving down the price. Perhaps the biggest reason trusses are more common is that they are over 30% cheaper than rafters. Roof trusses have become more popular than rafters in recent years for a few reasons. This makes rafters more expensive than trusses. Rafters are usually made from larger pieces of lumber, such as 2x8s or 2x10s, and require the skill of an expert carpenter to custom-build and install them directly on the job site. Trusses are used as an alternative to rafters, or stick framing.

Bottom chords (also known as I-joists, or ceiling joists).

Trusses are pre-engineered in a factory using lightweight materials, like 2x4s, and are shipped to the construction site. They determine the shape of the roof and ceiling, while providing support for the roof. On this page:Įssentially, roof trusses create a roof’s frame. In this article, we break down what exactly roof trusses are and explain some of the most common types used in order to help you get insight into what kind of roof trusses you may want to use for your roof construction project. And there’s good reason why trusses have become more popular - they’re cheaper, more convenient, and extremely versatile. Roof trusses have overtaken rafters as the most popular way to create a roof frame.