The glue was there but did not deliver when water hit the edge of the repair. Started to unstick immediately. We made sure to clean the surface completely, smoothed it down to make sure there were no bubbles, but to no avail. The item was folded for delivery and seemed okay until we started to unfold it. That's when we noticed the cracks, even before we started. Since we ordered 2 packages we actually opened and tried the second one, just in case the first one was a dud. Same thing happened. So flimsy that if you want to use a bigger piece you'll need 3 pairs of hands.