I also posted this over on GardenWeb, but I'm posting here too since I don't have a lot of experience in the area and need advice. So,...help please.
Please give a look at the pic below (assuming the posting works).
It shows what I believe is a serious issue concerning possible quality issues with the deck that was poured for my pool.
I have sent the PB an e-mail outlining my concerns, but I would like to hear what others think about protecting my rights since the deck pour constitutes the time I next owe a progress payment. I'm not interested in trying to hold up the money since it also covers the some great work like tile, plumbing, etc. However, I'm wondering if I need to send something like a certified letter expressing my feelings that this is inadequate as a product?