Polycarbonate Positioning and Attachment

Polycarbonate Positioning and Attachment – Minimum roof slope 5 degrees (1/12 pitch.       To Base & Cap System

Sheet Installed with ribs vertical on walls, with the slope on roof. Channels drain moisture. If horizontal mold gathers. Install with ribs vertical – same direction as sheet length * Sheet size listed is width x length

In extreme wind conditions mid-sheet fastening, and blocking or purlin positioning, may be 3 feet or closer.  Increase quantity of screws in mid sheet to every 12″ for wind speeds 110-130 mph. 10″ for wind speeds 131-150 mph. 8″ for wind speeds 151 or greater.

See Mid-Sheet Fastening for Placement of Spacers – if Rafter Framing and blocking set back 1/4″.
 

1″x 1″x 3/8″ Spacers allow condensation to move past blocking, on Rafter Framing ONLY,

See 8 – 25mm Polycarb some are 20 Yr Warranty – Lexan Thermoclear is clearly the industry leader

Polycarbonate Greenhouse and Sunroom Building Supplies