This high-performance polyurethane adhesive/sealant becomes tack free in 48 hours, completely cures in 5-7 days with no shrinkage. The seal is extremely strong, retains its strength above or below the waterline. Stays flexible - allows for structural movement. Stress caused by shock, vibration, swelling or shrinking is effectively absorbed. Has excellent resistance to wea thering and salt water. Easy to apply with manual caulking gun. Remains workable with trowel or spatula up to four hours after application. Won’t sag or flow in vertical or horizontal seams.