text:  They adhere very, very well, and that's the key. They bind with the masonry surface underneath, and that's what gives you the longevity. Because, of course, what happens is any masonry product is going to get wet in the winter and in the rain, and it's going to freeze. And as it does so, it sorts of pushes itself off, and that's why it gets loose after all those years, just the expansion and contraction of the freeze-thaw cycle. So I think if you pick up the right product, you should be able to repair that again and get a good number of years out of it.