Comments about Tape Product 491-3x50 3" Foil Tape:
Tape has good adhesion and is easy to separate from backing. Tape is reinforced with fibers to increase strength.
To use the tape, make sure you have a knife or scissors handy as you cannot tear pieces off the roll. Difficult to use in a hot attic, in a tight space.
Also, tape does not appear to be UL approved, wich may be an issue if inspections are involved.