Flagstone, Concrete & Stucco Product worked great for all 3 materials. Just rained yesterday for the first time since application and water beads on all surfaces. Easy to apply, I used roller and brush...material is "watery" consistency so it takes some practice to apply with roller to vertical surface. I researched for similar "silane/siloxane" and this one seems to get good reviews and well-priced. Would purchase again.