Other types of trusses include queen post trusses, mono trusses, and gable trusses. Larger residential projects often utilize fink trusses, which can span long distances. One of the most basic types of trusses is the king post truss, often used for small projects like home additions or garage construction. This popular look is accomplished via the scissor truss system, in which the bottom chords of the roof truss are sloped. ![]() Roof trusses offer a variety of intricate design options, such as cathedral ceilings. Depending on the design and support, a truss spans several feet-sometimes up to 32 feet or more. These structural members help provide support, allowing the roof’s weight to be evenly distributed to the outside walls. Trusses have wooden cords on the top and bottom, with webbing posts arranged in different patterns. The process also comes with the convenience of being able to preorder the materials. The truss system allows for greater durability and load bearing. Trusses are made most commonly from 2x4 or 2圆 beams but can sometimes be wider dimensional boards as large as 2x8. Since the truss construction occurs in such a controlled environment, there are usually fewer mistakes. A roof truss system is usually made in a factory and then shipped to the construction site. Roof trusses are composed of lightweight, prefabricated wood. Other, less common types of rafters include hip rafters, auxiliary rafters, compass rafters, and valley rafters. Principal rafters are often used, with smaller common rafters installed between the principal rafters to establish effective support. There are many types of rafters to consider when building a roof. For example, a rafter ceiling with exposed beams can give a bedroom a cozy, cottage-like atmosphere. ![]() Types of Roof Raftersįrom the basic gable roof to more complex patterns, roof rafters provide a beautiful range of design options. Sometimes, collar ties are also installed to help keep the roof from sagging, and to prevent the rafters from spreading apart. This provides excellent load bearing and roof support.Ĭeiling joists secure the rafters to the exterior walls for structural support. In the roof framing system, rafters slope down from the roof's peak and are attached to the ridge beam or ridge board. The roofing materials take less time to construct, since they are typically cut on the job site, and not in a factory like a roof truss. Rafter boards are usually cut into 2x10 or 2x12 beams. Each aspect of the home-the ceiling joist, load bearing walls, collar ties, wall plate, etc.-is assembled “stick-by-stick.” Traditional rafters are long wooden boards that form a stick framing pattern. These pros and cons are worth exploring when deciding between rafters and trusses for your home-building process. However, truss roofs have become an increasingly common type of roof framing over the years due to their lower price point.Įither rafters or trusses will get the job done, but there are pros and cons to both types of roofs. When deciding between rafters vs trusses, some will opt for rafter roofs in order to attain a classic house look. In fact, it’s possible to incorporate trusses and rafters in the same roof design, depending on the scope of the project. ![]() Though different assembly methods are used, both rafters and trusses are designed in a triangular shape that gives the roof slope. Sometimes, metal may be used instead, but such a structure is usually more expensive to build and maintain. Thinner strips of the wood can be glued together to produce a thicker beam. Rafters and trusses are typically comprised of three types of wood: fir, red cedar, and yellow pine. They are load bearing structures and hold up the elements of weight well. How are rafters and trusses similar? Both are used to create the architectural support for the roof or attic. Many homeowners choose between roof rafters and truss systems, as these are the two basic types of roof construction. Whether it be the classic Cape-Cod steep gable, or the sleek modern metal look, constructing a durable roof structure is essential in ensuring structural integrity for your new home.
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