Double-Lok® – Standing Seam Roof Panel Systems


The Double-Lok® roof panel is a mechanically field-seamed, trapezoidal leg standing seam roof system. Double-Lok® panels are available in 18-inch and 24-inch widths. Double-Lok® requires a minimum slope of 1 ⁄4 :12. Double-Lok® panels are ideal for industrial, commercial and architectural applications.



  • 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.


Applications: Roof
Coverage Widths: 18″ and 24″
Minimum Slope: 1 ⁄4 :12
Panel Attachment: Concealed Fastening System; Low, High, and 2″ Stand Off Sliding Clips 3″
Gauges: 24 and 22
Finishes: Smooth (standard); Embossed (optional)
Coatings: Galvalume Plus®, Signature® 200, Signature® 300, Signature® 300 Metallic