[Oak]

Rescue, thanks for the pics. I have a few questions on your install.

--What is the foam board you used and what is the cost? I looked at the 2" pink board at Home Cheapo and it is $36 for a 4x8 sheet. My slab is going to be 2400sf so I will need 75 sheets.

--What is it that you put up against the footer? I think all I have seen on the vids is that they run the 2" foam up to the top of the crete. I didn't think that looked right.

--Do I need 2" or could I use 1" at half the cost? I'm thinking probably 2" is the way to go.

--Did you put a vapor barrier down?

--I've seen it put down like your job is and then some people say the pex has to be in the middle of the crete to work properly. Most vids I've seen show the pex on top of the rebar but I'm like you, wouldn't there be some type of problem over time with expansion and contraction?

--Did you zone your job?

--Do you think I need to use the 5/8 for my job or will the 1/2" work?

--I will probably be using a propane tankless water heater for my source but I'm not sure what the codes say here for using them. I may be telling Mr. Inspector that the pex is for future use. Have you seen them used up your way?

Thanks for all the input everyone. I'm sure I will have more questions.