So I finally got to cleaning out my expansion joints around the pool decking and filling them with Sikaflex self leveling polyurethane sealant. When I say the job looks clean, it really looks amazing. Not even a pro would have done it nicer. I highly recommend the product. It's the cadillac of water proof sealants in my opinion. I got mine at home depot and it's easy to apply with a caulking gun.