Tuesday, July 6, 2010

Radiant Heating

Matt's team (MR Concrete) is working on the sub-floor, leveling, adding dirt here, removing dirt there, preparing to install the sub-floor insulation.  The insulation, 1" of underground rated (R-5) foam board, goes under about 8 inches of thermal mass that includes 4 1/2 inches of dirt,  1 1/2 inches of sand, the 2" brick floor.  The thermal mass in the floor will work nicely with the adobe walls, storing heat in the winter and cool in the summer to smooth out the seasonal day/night thermal cycle.  The radiant tubing runs through the sand, and the sand is topped off with the brick floor.  All-in-all we will have a nice quiet and cozy back-up heating system for our passive solar design in the winter and can circulate cool water during the summer.  Here the radiant tubing, installed by Plumbing Express, is ready for the sand covering.

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