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APOC® 42 #15 Felt Asphalt Saturated Underlayment

  • Protects Against Moisture Entry - Superior Asphalt Saturation for Improved Waterproofing
  • Breathable Membrane - Allows for the Transmission of Air Vapor while Keeping Water Out
  • Use Under Roof Shingles, Wood Shake, Tile & Other Primary Coverings
  • Meets ASTM D4869

APOC organic felts are engineered with True-Breathe™ Technology, keeping rain and water on the outside of your home while allowing water vapor from cooking, cleaning, bathing and other sources to escape home entrapment. Tru-Breathe Technology helps prevent premature damage and rotting of your roof deck materials which can lead to unsafe structures and the development of mold. True-Breathe Technology is designed and manufactured to allow the transmission of air vapor while keeping water out.  Meets ASTM D4869 TYPE I. MEETS CGSB CAN2-51.32, & UL Classified.

Testing & Approvals:

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Product Specifications

Code Dimensions Weight
AP-0042 36" x 144' 35 lb