You can’t afford to skip this step. The PEX is cheap and you can add the remaining components later. I insulated around my foundation and under the floor. I heat a 1250 square foot building with a small on demand water heater. I doubt I have much over $1500 in the entire heating system including the PEX.
Well, the nice thing is, we were planning on concreting this weekend and I didn’t wanna spend the $1000+ for the insulation, but plans changed, we’re not concreting it this weekend after all, so now I’ve got more time to mull it over.
