Radiant Floor Heat

We are heating our house with a solar radiant floor system. The red pipes constantly circulates hot water through the concrete slab. The pipes are hooked up to a solar hot water heater. This will be the only heating system in the house. It will heat up the concrete and then radiate throughout the whole house. I am very curious to see how well this works -- at least we can heat the house for FREE!!!! There is 1200 feet of this pipe in the slab. There are no breaks/connections in the pipes. Each pipe links to the in-take and out-take valves, so we should never have a leak (hopefully). Once Roger put down all the pipes, we then had to put 1000 plastic zip-ties that secured the pipes to the re-bar. Mom came over that day and helped Roger tie them all down. Well then we had to cut the tips of the zip-ties off. Thank goodness dad came over that day. Who knew 1000 zip-ties would be that many --- it was. Dad and I worked for hours on this project. I had many many many blisters at the end of this day. Once the pipes were down, we had a horrible realization -- the slab was not going to be as thick as it needed to be. The total thickness of the slab should be 4" thick. We were measuring from the top of the first round and there were places where the concrete would only be 2" thick. Roger quickly realized that technology is not always right. The laser beam they used ended up being off in places. Oh no what are we going to do -- this was the worst day so far. The concrete was coming the next day all the re-bar & radiant pipes were down; we can't dig down in the high spots. Roger was pissed and I had no idea what to do. Roger had to come up with a miracle and he did. We built up a 2" form on top of the first round of blocks to raise the level to 4" in the lowest parts. Now this was no easy win -- it took us hours to build these forms and then of course our luck once we started installing them, Roger's nail gun stopped working, could it get any worse. Roger found new nails and the gun started working. The best part was dad showed up out of no where to help where ever he could. I think mom told him he needed to come, the few times I talked to her this day, I was on the verge of tears at any time. I had the best feeling when I saw dad's car. While Roger finished building the forms, dad and I clipped the tips of the plastic zip-ties, like I said above. Parents save the world just when you need it most :)!!!!!! At the end of the day were emotionally and physically exhausted -- but I had a crock pot going, so we were good to go!!