FortiFlash Butyl Tape

FortiFlash Butyl Tape



  • 9” X75’

  • High performance self-adhesive waterproof flashing membrane

  • Chemically compatible with all standard sealants, as well as EPDM and flexible vinyl

  • Seals around fasteners

  • Ultra durable facer

  • Split release sheet for easy integration

  • Mold resistant

  • Excellent low temperature adhesion

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FortiFlash Butyl delivers in the most demanding environments, providing a strong self-sealing barrier to protect windows, doors and through-wall penetrations – as well as nonroofing conditions such as recessed windows, sill pans, pot shelves and parapets. The product’s chemical compatibility with most standard sealants – as well as EPDM and flexible vinyl, makes it the ideal choice on the jobsite.

FortiFlash Butyl’s proprietary compound delivers rock solid adhesion at temperatures well below those where other self-adhesive flashing products just won’t stick — while maintaining its protective properties at service temperatures up to 250° F. Reinforced by a heavy duty multi-layered polyethylene facer, the product can be easily worked around protrusions and into tight corners without delaminating or tearing. And the split release sheet makes integration with weather-resistive barriers a snap.