Foundation Seal Tape (FST) is used to seal the crawl space vapor barrier to the foundation wall. When installed to a dry, clean (the concrete must be brushed off to remove loose debris) foundation wall the bond is good enough to hold the SilverBack™ to the wall temporarily (several hours/days) until the Foundation Pins are installed. If the foundation wall is wet in the area it will be installed and it will not bond then a polyurethane caulk must be used. This tape is 1.5" x 108' and has a...