I have read that the pex tubing is supposed to be 2" below the finished surface of the concrete but i see some people attach it directly to the foam board. What is the preferred method for tube placement?
so eps is ok to use as long as it is rated 25 psi or higher? i havent seen the foam yet so i dont know what it is. Is the other stuff ok to use as long as the rating is high enough?
i have found some 3" polystyrene foam for sale (cheap) and was going to use it to insulate the walls in my garage. Can I also use under the concrete? And how can I tell the difference between the different types (eps xps??) The foam is white and it was used to insulate a warehouse.