Corle "R" Panel is used for commercial, industrial, agricultural and residential roofing, or siding panel requiring an economical covering. Manufactured from 26- or 24-gauge galvalume substrate with purlin bearing leg to ensure proper attachment and lap engagement. Corle "R" panel had 1-1/4" major ribs 12" on center, with minor ribs 4" on center, panel coverage is 36" width per panel. 
 

• ASTM E1680 Air Leakage Test through Exterior Metal Roof Panel Systems 

• ASTM E1646 Water Penetration Test of Exterior Metal Roofing System​​