51 year old Engineer I Griff Nevin, hailing from
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July 31, 2024
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The rib on the underlapped side has a drainage or anti-siphon channel to keep water moving toward the eave. Overlap the last rib on each panel; they should nest together perfectly. A square reference line is important for installing roofing panels evenly. Use the method to establish a reference line 90 degrees to the eave.
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