For many of us the Jacuzzi, spa or hot tub can create a unique crack or corner that has significant movement usually between the deck and the fiberglass tub.  Caulking a joint like this can be very challenging and far too often ends up coming apart and separating from expansion and contraction.  Insta Caulk solves this problem with our Patent Pending “wing” design that allows for movement of the Jacuzzi, spa or hot tub and still maintain a tight seal to both surfaces.  In addition, since Insta Caulk is available in different sizes, wider gaps will still look good and have a professional looking finish every time.