I purchased this to seal some brick work on my business. Do to the lack of gutters, whenever it rains, water comes off the roof and splashes off a brick sill that surrounds the front part of my building. Over time it has eroded the brick and mortar and moss frequently grows in the places that don't see much sun. I had hired a company to come out to clean and repair the brick work and they suggested I use this product to seal the brick after they were done. Well, I figured I want it to last this time so I got the SX5000 and applied it to the wall and sill. I spoke with the company that makes it and they suggested I do a few coats as brick is more porous than concrete. It was easy to spray on and the brick sucked it all in. The real test was a week later when we had heavy rains and the water beaded right off the brick! It's been 3 months now and I see no signs of moss and the water still beads off the brick like the day I applied it. Very happy with my purchase.