One of the main advantages of aluminum roof trusses is its high strength-to-weight ratio. The following are some of the advantages of building with aluminum roof trusses, in no particular order.ġ. In addition to meeting stringent green building certification requirements, steel is also strong and durable, able to withstand most of the threats that wooden trusses are susceptible to. Also, as an active conductor of heat, metal studs can ignite adjacent materials, which may cause flames to spread to other areas of a building rapidly.As with any building product, there are advantages and disadvantages to using aluminum roof truss construction, which means that due diligence is beneficial to you so that your team can determine which product is the best for the expansion and overall life expectancy of the building for the upcoming project.ġ.Advantages of using aluminum roof trussesĢ.Disadvantages of using aluminum roof trussesĪdvantages of using aluminum roof trussesĪll the advantages of building with aluminum roof trusses are similar to the advantages of building with steel in general. While metal is incombustible, it loses strength at high temperatures, like during a fire, which makes the metal studs prone to buckling and even collapse. So if your ceiling is unfinished, you have some excess carrying capacity up there: 5 lbs. The horizontal bottom chords of most garage trusses are designed to carry the weight of drywall and insulation. It also moves more with temperature fluctuations.Sound is more easily transmitted with steel trusses.They allow more heat to escape from the home and are not as energy efficient.Steel trusses require more skilled labor. What are 3 disadvantages of steel trusses? A range of truss types can be configured to attain different shapes. The spacing depends on the mass of the roofing material and local practice. Trusses are usually spaced at regular intervals, typically 600 mm, 900 mm or 1,200 mm apart. How far apart are steel trusses for a house? With traditional stick-frame construction, the trusses are usually spaced 2 feet apart. Pole barn construction spaces the trusses 8 feet apart – or even up to 12 feet apart depending on the building design. How far apart should steel roof truss be? However, while they aren't susceptible to rot, pests, or moisture damage, they are susceptible to rust in corrosive environments. Well-made metal trusses should last for years. Steel can also be a conductor of heat, which means it needs to be adequately fireproofed. Consequently, the costs of painting and maintaining a steel structure can be high. Unlike concrete and wood materials, steel is notorious for rusting in certain environments. Corrosion is a result of electrochemical oxidation when steel reacts with oxygen, it produces metal oxide or rust. Steel is not durable because it is prone to corrosion, especially when exposed to outdoor elements. Timber trusses may warp and bow over time, which can cause structural damage to the rest of the building. Timber is a natural material, it cannot stand up to the elements as well as steel. Wooden trusses are generally cheaper than steel trusses, however they don't last as long. Why metal trusses are better than timber trusses? This stability is why the shape is so common in wood roof truss manufacturing. Triangles are considered the strongest shapes, because when force is applied to the top point, that weight is distributed evenly to both sides and supported by the triangle's large base. Material: Trusses are most often made of wood, steel, or both. For instance, scissor trusses can cost 15%–30% more than a queen post truss. What is the cheapest type of roof truss?Įach type has a different price. What is the most popular roof truss?Ī fink truss is the most common type of truss used, especially on homes and pedestrian buildings. Steel is one of the most popular roof truss materials thanks to its strength and durability. Wood ranges anywhere between $35 to $400 per truss depending on the size of the roof, and you can expect steel to cost double this range. Wood trusses are usually cheaper than their steel counterparts. For a 10-foot span, a truss roof costs between $45 to $135, while a 60-foot span costs between $300 to $400. Roof truss prices fall anywhere between $1.50 to $4.50 per square foot for materials.
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