TwinLok™ metal roof panels offer an economical option for building owners. This mechanically double-locked standing seam roof system is available with a 1-1/2″ or 2″ seam and 12″, 16″ or 18″ coverage width.

Product Documents

Design Characteristics

  • Available with 1½-inch or 2-inch seam
  • Mechanically double-locked interlocking seam
  • Designed for use on slopes of 2:12 and above (with a solid deck and underlayment)
  • Heavy concealed clips allow thermal movement
  • Factory-applied hot-melt seam sealant
  • Center of panels can be striated or flat
  • Available widths for TwinLok 1.5: 12, 16 and 18-inch
  • Available widths for TwinLok 2.0: 12, 16 and 18-inch

Available Materials

  • Steel: 22 and 24-gauge
  • Aluminum: .032″ and .040″
  • United Zinc: 0.8mm and 1.0mm

Product Testing

  • UL-580 Class 90 windstorm rating
  • ASTM E-283 air infiltration
  • ASTM E-330
  • ASTM E-331 water penetration
  • ASTM E-1592 uniform static air pressure


  • 20-year finish warranty for Kynar® coating
  • Materials and workmanship warranty
  • Weathertight warranty on qualifying applications

Thinking about your next project?



Generic filters
Exact matches only