The next step in the process is to do the under-slab plumbing. Most of the plumbing will be above the slab and will be done after the house is closed in and the interior walls are built but not drywalled.We ran the lowest portion of the drain pipes and left stubs sticking out of what will be the slab. We then ran a black perforated pipe through the middle of the house for radon mitigation (or “Robot Mitigation” as we started calling it. I have no idea why). This may not be necessary, but it’s cheap and easy to do at this point.
We also ran a 6″ diameter pipe from the outside to where the masonry heater will be built. This provides outside air to the fire, which, along with the flue/chimney, creates a sealed combustion system which won’t depressurize the house when we light a fire. It also will prevent carbon monoxide from backing up into the house in any circumstance.
This part was pretty tricky – we had to be sure our measurements were correct, or we’ll be rearranging the walls to hide the plumbing! Also, neither of us has plumbed a house before, although I’ve done remodel plumbing. I was a bit nervous as this part required an inspection before we could continue. Fortunately, the inspector’s only beefs resulted in about 30 minutes of work fixing the issues.All told, the plumbing took about three weeks working weekends and some nights. I think Frank was starting to wonder if we would ever finish, since a master plumber would have had it knocked out in a couple of days.