Review on XFasten Waterproof Aluminum Adhesive Flashing by John Bourgeois

I have this to seal my chimney. It adheres well to the casing, but does not adhere to the chimney block at all. Before applying, I cleaned everything, rinsed it off and let it dry for a day. Thus, he walked on a perfectly clean, dry and dirt-free surface. This was in 60 degrees Fahrenheit, well within what is advertised as working. I was going to use all the leftovers to plug the gutter leak but I used up the whole roll trying to tape it to the chimney. good uncomplicated solution.