York Seal is a proprietary, self adhering composite membrane, uniquely combining high strength, low temperature adhesion and high temperature stability into a superior barrier to limit air and moisture transmission.  A tough 5 mil (0.1mm) high density polyethylene film forms a resilient barrier to physical damage.  The proprietary, modified asphalt offers the waterproofing effectiveness of traditional modified bitumen products with low temperature adhesion.

Key Properties

  • Waterproof and impermeable to moisture
  • Superior adhesion - fully bonded
  • Cross laminated polyethylene facer
  • Low temperature adhesion and flexibility
  • Impermeable to air, moisture vapor and water

Uses / Benefits

  • Through-wall flashing
  • Used to prevent vapor and air transmission through:
    - Masonry curtain walls
    - Construction joints
    - Fittings around doors and windows.
  • Acceptable surfaces include:
    - Plywood
    - Lumber
    - Precast concrete
    - Metal
    - Exterior gypsum
    - Concrete block

Available in Sizes

75' Rolls
12", 18", & 24" Widths

Associated Products / Accessories