We finished all the plumbing, then backfilled everything. We spread gravel over everything and leveled it out, then compacted it with a tamper. You would not BELIEVE how hard it is to get that much gravel/dirt level over such a big area! We tried to get it as close to 5 inches below the floor as possible so we don't have to pour as much concrete. The gravel is cheaper!!
Last weekend we had the guy spray everything with termite spray, then covered the whole thing with plastic. We put styrofoam insulation over the plastic everywhere except the basement to hold in the heat from the radiant tubing. Then we put down this wire stuff that looks like fencing to help hold the concrete together an to attach the radiant tubing to. Then we put all the tubing down and zip-tied it to the wire. We cut out all the doors and put boards on the outside so the concrete would be smooth there. We also had to put MORE rebar in the polydeck over the basement to make sure the beams would be good and strong to hold up the floor. Here are some pics of our work:
Filling in and leveling out the gravel. SO MUCH WORK!!! I really HATE shoveling! : )
Nathaniel running the tamper.
The plastic over the garage--it doesn't need insulation since we're not doing floor heat in there!
You can see the black plastic underneath, then the white foam and the wire on top. Of course, it HAD to be windy the day we did it! Thanks to our nieces and nephew for their help!!
You can see the radiant floor tubing. We will circulate hot water through it and it heats the concrete and thus the floors!
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