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Metal expands when heated and contracts when cooled, meaning that a roof panel can shift slightly throughout the day and across seasons. If the roof is not designed to accommodate this movement, issues such as panel distortion, fastener failure, or oil canning (visible waviness) can occur. This is particularly important for long panel runs, where the movement is more pronounced, and improper installation could lead to structural stress or premature wear.
To mitigate these risks, we use specialized clips and floating fasteners that allow the panels to move without causing damage. Additionally, proper spacing and seam design ensure that thermal movement is evenly distributed across the roof. Without these considerations, the roof may experience buckling, leaks, or fastener breakage, ultimately compromising its longevity and performance. By understanding and accounting for thermal expansion and contraction, homeowners and contractors can ensure a durable, long-lasting, and efficient standing seam metal roof.
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