STANDING SEAM METAL ROOFING DOUBLE-LOK® The Double-Lok® roof panel is a mechanically field-seamed, trapezoidal leg standing seam roof system. Double-Lok® panels are available in 18” and 24” widths. Double-Lok® requires a minimum slope of ¼:12. Double-Lok® panels are ideal for industrial, commercial and architectural applications. FEATURES AND BENEFITS Designed to cope with the forces of expansion and contraction. This is accomplished by allowing the panels to freely move up and down the roof slope. 2” and 4” sliding clips are available in high and low versions, which allow thermal movement on a wide variety of building widths. Numerous UL 580 Construction rating are available, as well as UL 790, Class A for external fire, numerous roof assemblies for UL 263 for internal fire and the UL 2218 Class 4 impact rating. Double-Lok® carries FM, Florida approval and Dade County ratings. PRODUCT SPECIFICATIONS APPLICATIONS: Roof FINISHES: Smooth (standard); MINIMUM SLOPE: ¼:12 PANEL ATTACHMENT: Concealed Fastening System; Low, High, and 2” Stand Off Sliding Clips Embossed (optional) COATINGS: Galvalume Plus®, Signature® 200, Signature® 300, Signature® 300 Metallic

STANDING SEAM METAL ROOFING DOUBLE-LOK® CATEGORY TEST METHOD PURPOSE Air-leakage Through Roof Panel Joints Determines the air leakage characteristics of metal roof panels under specified air pressure differences at ambient conditions 0.005 cfm/ft2 at 1.57 psf static pressure 0.006 cfm/ft2 at 6.24 psf static pressure Water Penetration Through Roof Panel Joints Determines the resistance to water penetration of metal roof panels under uniform static air pressure difference No uncontrolled water penetration through the panel joints at a static pressure of 20.00 psf Impact Resistance Determines Impact...