Polycarbonate to Existing Roofing, Base & Cap - Roofing at lower edge of roof
Conventional Wood Frame Rafter or Truss Roof
Polycarbonate Selection---Samples & Guide----Quoting & Ordering
Note:.Drawings below show detail when there is roofing at lower edge of polycarbonate.
Polycarbonate must be elevated so it overlaps roofing material at the lower edge of slope.
This will help greatly to eliminate leaks.
See detail when polycarbonate is at lower edge of roof. 
Carlisle Hardcast Foil-Grip 3" x 100 ft. Adhesive Roll Flashing (shown above) has 15 mil Butyl Adhesive (facing down) and a Aluminum backing (that faces the sun). For wider than 3" areas simply overlay. Make sure polycarbonate is securely fastened to the structure with the screws we sell. To purchase see Hardware Section of our Online Order forms. See pdf version of tech & install data sheet.
 
Reload Sundance Supply Site