York 304 SA 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 SA 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 SA’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 transition flashing.  Excellent bond to a variety of substrates like OSB, exterior gypsum, plywood, concrete, metals and air barrier materials.  York 304 SA contributes toward LEED by satisfying EA Credit 1 (optimize energy performance) and EQ Credit 4.1 (low emitting materials).

Key Properties

  • Available in type 304 (standard) & type 316 for more corrosive/coastal areas
  • 20 year warranty
  • Butyl adhesive/watertight bond
  • Primerless
  • Flexible & easy to cut & form by hand
  • Unlimited UV exposure: to prevent damage, product must be concealed within 180 days
  • Best in class puncture & tear resistance
    - Puncture: ASTM E154; 2,500+ psi
    - Tensile: ASTM D412; 100,000
  • Fire resistant: ASTM E84 Class A material
  • Mold resistant: passes ASTM D3273
  • Bare SS is the perfect surface for sealants to adhere to
  • Excellent bond to a variety of substrates like OSB, exterior gypsum, plywood, concrete, metals & air barrier materials
  • Contributes towards LEED by satisfying EA Credit 1 (optimize energy performance) and EQ Credit 4.1 (low emitting materials)

Uses / Benefits

  • Through-wall flashing
  • Transition membrane (air barriers, roofing, waterproofing)
  • Window & door sill pan flashing
  • Jamb closer flashing
  • Repair tape for flashing, air barriers, etc.
  • Roof to parapet flashing
  • Lap tape for through-wall flashing
  • Deck ledger flashing
  • Compatible with:
    - Air barriers
    - Spray polyurethane foam
    - Insulation boards
    - Below grade waterproofing
    - Roofing membranes
    - Construction sealants

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