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Fortifiber Fortiflash 6" X 75' Butyl Flashing

Brand: Fortifiber Mfg#: M707006
Product#: 278M707006
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The best insurance against water intrusion in residential and commercial construction is the proper installation of the windows and doors with high quality flashing materials. Products that provide an extra measure of protection can head off big headaches – and expensive callbacks – down the road. The FortiFlash Butyl waterproof flashing membrane is part of the complete Moisture Control System for walls engineered by the Fortifiber Building Systems Group®. When properly integrated into the building envelope, our solutions help manage moisture-related problems including water-related structural failures, mold and mildew.


  • High performance self-adhesive waterproof flashing membrane
  • Seals around fasteners
  • Delivers lasting protection against water intrusion
  • Excellent low temperature adhesion
  • Chemically compatible with all standard sealants seals around fasteners ultra durable facer
  • Split release sheet for easy integration mold resistant excellent low temperature adhesion
  • Asphalt free


  • Brand: Fortifiber
  • Product Line: FortiFlash
  • Type: Waterproof, Self-Adhesive
  • Material: Butyl
  • Thickness: 20 mil
  • Standards: AAMA Specified, ASTM D779/D1970/5034/E2112/711-07
  • Specific Gravity: > 1
  • Color: White
  • Tensile Strength: 70 lb-in
  • Length: 75 ft
  • Width: 6 in
  • Special Features: 90 deg 5.9 lb ft-in Peel Adhesion
  • Usage: Used to Protect Against Water Intrusion In Horizontal Applications Such As Pot Shelves, Parapets, And Recessed Windows.