Twin Jet is a 2-part, low-rise, foam adhesive, designed for attachment to polyiso insulation and most Firestone approved substrates. This reliable, quality adhesive solution requires no special equipment, is easy-to-use, and capable of coverage up to 35 squares/set when dispensed in bead application. Twin Jet offers fast and easy set up and shut down, helping to improve rooftop productivity. Each set conveniently comes with hose/gun, mix tips, and extension tubes. Firestone Twin Jet is not approved for spatter application or membrane attachment at this time.