York 304 Self Adhering Stainless Steel Flexible Flashing has been designed with a flexible 2 mil sheet of type 304 stainless steel, 8 mils of butyl adhesive and a siliconized release liner.  York 304 is a self-adhering metal flashing that offers best in class puncture and tear resistance.  It can be applied from 20°F to 170°F and stays stable and air tight from -70°F to 250°F.

York 304’s bare stainless steel face is compatible with the majority of air barriers, sealants, insulations, below grade waterproofing and roofing membranes, which makes it a terrific transistion flashing.  Excellent bond to a variety of substrates like OSB, exterior gypsum, plywood, concrete, metals and air barrier materials.  York 304 contributes toward LEED by satisfying EA Credit 1 (optimize energy performance) and EQ Credit 4.1 (low emitting materials).

Key Properties

  • 304 Stainless Steel Sheet
  • Butyl Adhesive/Watertight bond
  • Flexible Install
  • UV Resistant
  • Best in class puncture and tear resistance
  • Fire Resistant - ASTM E84
  • Mold Resistant - ASTM D3273

Uses / Benefits

  • Through-Wall Flashing
  • Lap Tape for Through-Wall Flashing
  • Curtain Wall Perimeter Flashing
  • Jamb Closer Flashing
  • Roof to Parapet Flashing
  • Transition Membrane (air barriers, roofing, waterproofing)
  • Repair Tape for flashing, air barriers, etc.
  • Window and Door Sill Pan Flashing
  • Deck Ledger Flashing
  • Saddle Flashing
  • Window and Door Tape

Available in Sizes

20' Rolls - 4", 6", 9" & 12" Widths
50' Rolls - 4", 6", 9", 12", 18", 24" and 36" Widths
*Custom sizes upon request
*Type 316 is available for coastal/severe applications
20' Rolls - 4", 6", 9" & 12" Widths
50' Rolls - 4", 6", 9", 12", 18" and 36" Widths