[cooperino]

Originally Posted by Rescue11

Rebar sits on chairs and is installed after in floor is laid.

At no point do I want anything wire metal anything touching my in floor tubing.

Amen to that.. I know I am to the party late here. My buddy did just that in his garage floor "metal ties" when it sprung a leak he dug it up to find the metal ties rusted and pulled through the pex. He fixed the one and about a month later another appeared. He has decided if it happens a third time he will rip out entire floor. The first leak appeared 6 years after initial install. His "plumber did the pex work and told him he uses the metal ties in all his jobs.. Yikes!
Learning from my buddies mistakes, when the time comes I will be using a tie made of plastic. I would think by now there would be some sort of tie specifically made for the install but I don't know. New stuff seems to come to market daily. Problem is I would hate to use something new and untested in this kind of install.