FortiSeal™ Wall Penetration Flashing is a pre-sized superior polyolefin membrane for flashing multiple size pipe and other common electrical, plumbing and HVAC penetrations. FortiSeal provides a quick, clean and economical way to prevent leaks at through-wall penetrations. 

With a vapor permeance of 0.02 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, weatherresistive barriers and sealants.