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.

• High performance self-adhesive waterproof flashing membrane
• Chemically compatible with most standard sealants, as well as EPDM and flexible vinyl
• Seals around fasteners
• Asphalt free
• Split release sheet for easy integration
• Excellent low temperature adhesion