Corrugated Polycarbonate

Corrugated - Screw Layout - Purlin & Girt Frame---> Quote & Order-------Reload Site
See Layout for spacing of roof purlins & wall girts. Also see Closure Drawing.: -
• Wall Sheets: At top, bottom & body of wall sheets fasten to wall girts with (1) 1" screw at every 3rd valley. At corners (see layout at left of drawing below) place blocking between girts (so there is a framing member to screw to) and position a 2" wood or 1-1/2" self-drill metal screw every 12" on-center. See Layout Close-up.
• Roof Sheets: In body of sheet fasten to roof purlins with (1) 2" wood or (1) 1-1/2" self-drill metal screw every 3rd corrugation crown. At top and bottom of roof sheets place screws every 2nd corrugation crown. At corners (see layout at left of drawing below) place blocking between purlins (so there is a framing member to screw to) and position a 2" wood or 1-1/2" self-drill metal screw every 12" on-center. See Layout Close-up.: Note: On steep slopes one may use 1" screws in the valley of sheet. Best in high wind areas.
• Sheet Overlaps Use a 2" wood or 1-1/2" self-drill screw at crown of sheet overlap. To cinch sheet together between girts and purlins use Hy-Clinch Rivets.
• To avoid sheet deforming fasten screws without excessive tension.