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A roof truss is a very strong and stable frame made for rooftops. The most common roof trusses are made from wood that is held together by metal connector plates. Other roof trusses are made from steel beams welded together to provide the same strength and stability as the wooden trusses.
The metal trusses are commonly used for commercial grade buildings. The wooden frame trusses are often used for homes, garages, and barns. However, if the barns and garages are of commercial grade, the metal trusses have been substituted.

The wooden roof trusses need to have be fairly dry when being made. With today's construction needs, contractors try to get wood that is flame retardant. They will also use rust-free metal connectors. By using all of these things, contractors who make roof trusses can build more reliable, safe, and stable trusses.

The most commonly used roof trusses are Gable, hip, and the Polynesian. On occasion, a piggyback, attic truss, flat pitched, and skillion trusses are used depending on the type of roof line that is needed for the structure.

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