I've read mixed feelings regarding the need for an expansion joint between coping and patio. My pool has a both a brick coping and patio - Same exact bricks - In Northeast - Nassau Bricks - approx 4 x 8 size.
I had my pool & patio redone and the company that did it did a poor job on the patio portion in terms of details but they did place an expansion joint approx 3/4" thick of some spongy material between brick coping and patio - stating it was absolutely necessary. I'm currently redoing the patio portion because we were so unhappy with how it looked. The new mason who seems to know what he is doing and comes highly recommended feels that an expansion joint is not necessary in the case of our pool. He made reference to the way the concrete beam extends just beyond the brick coping & and laying brick patio portion in sand and special interlocking polymer to be used between bricks obviate the need in MY CASE for the expansion joint. He is not against expansion joints - he just feels in my situation not necessary. The prior expansion joint looked very unsightly so I wouldn't mind not having one but on the other hand I don't want to regret it later on. Any opinions? thanks