MasterLok-90 and MasterLok-FS Panels

MasterLok-90 (also referred to as ML-90) is a snap-together trapezoidal standing seam system designed for projects with slopes as low as 1/4:12. 

MasterLok-FS (also referred to as ML-FS) is a mechanically seamed trapezoidal standing seam system also designed for projects with slopes as low as 1/4:12.

Both panels are best suited for simple sloped roofs without dormers, hips, valleys, or other special conditions. ML-90 and ML-FS can be installed over solid decking or substructural members.

  • Sealant: Factory applied to improve weather-tightness
  • Minimum slope: ML-90 1/4:12; ML-FS 1/4:12
  • Installation: Can be over solid deck or open framing
  • MasterLok-FS: Mechanically seamed system
  • MasterLok-90: Snap Together System
  • Note* MoistureLok available on MasterLok-90. Oil Canning is a natural occurrence in metal panels and is not a cause for panel rejection
  • Panel Width: 24″
  • Coating: Kynar 500® (PVDF)
  • Substrate:
    • Standard 24 GA Galvalume®
    • Optional 22 GA Galvalume