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So long as the installation meets the engineered design [and the design was properly engineered], the sole reason to choose one spacing over another is cost. In some cases larger spacing will require an upgrade to supplementary structural components such as framing anchors or increased straps or additional nails. The only way to know if there is a difference ...


The primary advantage to closer truss spacing is greater load-bearing ability, which is important if the roof will have heavy stuff on it, like shingles and snow. With 24" OC trusses and a conventional shingle roof, you may need to shovel your roof from time to time to prevent snow buildup from becoming dangerous. On the other hand, you can decrease this ...

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