York 304 SA Self Adhering Stainless Steel Flexible Flashing has been designed with a flexible 2 mil sheet of type 304 stainless steel, 10 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, construction sealants, insulations, below grade waterproofing and roofing membranes, which makes it a terrific transition flashing.  York 304 SA has an 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
  • Bare stainless steel surface for sealants to adhere to
  • Best in class puncture and tear resistance
  • Butyl adhesive/watertight bond
  • No primer required
  • Flexible, easy to cut and form by hand
  • UV resistant
  • 20 year warranty
  • Fire resistant: ASTM E84 Class A material
  • Mold resistant: passes ASTM D3273
  • Passes AAMA 711-20
  • Passes air barrier material test: ASTM E2178-13
  • Excellent bond to a variety of substrates like OSB, exterior gypsum, plywood, concrete, metals and 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
  • Air barrier transition membrane
  • Roof-to-wall transition membrane
  • Below grade waterproofing transition membrane
  • Jamb closure and fenestration flashing
  • Parapet transition membrane
  • Window and door sill pan
  • Repair tape for flashing, air barriers, etc.
  • Lap tape
  • Deck ledger flashing

Available in Sizes

20' Rolls - 4", 6", 9" and 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