Best product ever!! Air Stone, only found at Lowe's. Costs about $60 for 8 sq ft which left me with 3 bricks in the end, and $15 for Air Stone adhesive. All you need is a trowel, a hack saw, and Tetris skills . My Father n' Law and I completed the face of my bath in 1 hour! No prep needed, we iced each brick like a cupcake and stuck it directly on the tile. I finished the top with a 3/4" primed/painted decorative strip of wood... About $5 more and a squeeze of silicone tub n tile.