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Roof trusses and frames are important structural elements of any building, and may require periodic maintenance to ensure the building is secure. The components of roof trusses are also known as beams and rafters, and may be visible or exposed in some buildings. Trusses and frames are load bearing elements of a building, and also carry the responsibility of insulating and weatherproofing a building. Roof trusses and building frames are usually manufactured from timber, though steel is also used in industrial applications. Steel is more durable and fire resistant though more costly than timber. Frames and trusses are usually manufactured off-site, and delivered for immediate installation when required.
Leaking roofing, guttering or flashing are the most common causes of deterioration in roof trusses, where moisture infiltrates and causes decay, rot or fungal growth. Insects such as termites can also be a cause of concern for any timber roof truss or wall frame. Prevention in the form of chemical treatment of the timber is the most common method of protection in this scenario. Structural engineers are typically best placed to advise and evaluate on maintenance issues regarding maintenance of roof trusses and wall frames. They will use a combination of methods to evaluate if repair work needs to be carried out, including visual assessment, moisture meters and fibre optic devices.
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