Positioning Corrugated panels have a UV resistant exterior and a condensate control interior surface. Install panels with label side out. Panels should be installed with exterior lap edges facing away from prevailing winds. Weather-Seal Using only neoprene or EPDM weatherseal washers with the fasteners of polycarbonate sheets. Other types of washers may cause panel deterioration at fastening points.
Washers are to be of sufficient diameter to provide good seal against weather penetration.
Closure strips must be of compatible neoprene or foam as well. An overlap of at least one corrugation is recommended. The upper sheet in the overlap should be in the up-wind direction. Flexing or installing a sheet to the point of buckling can cause rapid deterioration in highly stressed areas. Even if paint is necessary, the paints used should be compatible with polycarbonate.