FortiSeal through-wall flashing is a pre-sized superior polyolefin membrane for flashing multiple size pipe penetrations. FortiSeal provides a quick, clean and economical way to prevent leaks at through-wall penetrations.

With a vapor permeance of .02 perms and a tensile strength and puncture resistance that outperforms even thicker membranes, the flashing is extremely durable and puncture resistant. It is also more cost-effective than bitumen or butyl products, and helps save time on the job. FortiSeal is sized 6" x 6" or 8" x 11" with either pre-punched holes or unpunched blanks. Standard hole sizes are ½" up to 2".

Henry FortiSeal Flashing is considered an accessory to the Henry® 1-2-3 Moisture Control System™ of flashings, weather-resistive barriers and sealants. The system takes the guesswork out of weatherization so you can build with confidence.  

Features

• Standard hole sizes from ½" to 2"
• Installs easily with a utility knife and Henry Sheathing Tape
• Highly cost-effective moisture protection 
• Extremely puncture resistant