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


  • Brand: Fortifiber
  • Product Line: FortiFlash
  • Type: Waterproof, Self-Adhesive
  • Specific Gravity: > 1
  • Thickness: 20 mil
  • Material: Butyl
  • Color: White
  • Tensile Strength: 70 lb-in
  • Standards: AAMA Specified, ASTM D779/D1970/5034/E2112/711-07
  • 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.