PBR-Panel: PBR Panel stands for Purlin Bearing Rib Panel. This panel is far superior to the traditional "R" panel for most roof applications. With a "PBR" panel, you can rest assured that even under the stress from human weight during installation, these panels won't crimp or buckle. This panel's secret is an extra lip on the edge that provides superior overlap between panels and seals out the elements.
SS (Standing Seam): Side joints of roof panels that are arranged in a vertical position above the roof line.
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