Owens Corning® WeatherLock® Series Waterproofing Underlayment


WeatherLock® G Granulated Weatherproofing Underlayment protects your roof deck from the freeze/thaw cycling, wind-driven rain and normal water flow around the valleys, vents, chimneys and skylights.





OC WeatherLock® G Granulated
1.5sq. roll
  • Thickness: 55 mils
  • Area: 100sq. ft.
  • Length: 33.3ft.
  • Width: 3 ft.




OC WeatherLock® G Granulated
2sq. roll
  • Thickness: 55 mils
  • Area: 200 sq. ft.
  • Length: 66.7 ft.
  • Width: 3 ft.




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