Here in Washington state I was able to install 1x6 T&G pine on our
ceilings. The inspector said sheetrock wasn't needed for a single story
residence since there is no living space above. The T&G pine still serves
as a fireblock to slow the spread of fire into the attic space. The
inspector was more concerned about sealing up openings where wires or pipes
pass through the framing.
Of course, the rules in your area could be different, so I recommend
checking with your local building department.
Sheetrock does not stop the flow of moisture. Air flow can be controlled by
installing a barrier on the ceiling before installing the T&G boards.
Fiberglass batt insulation usually already has a vapor barrier. If
installed correctly, you will get very little air leakage through the T&G
On Sunday, February 15, 2015 at 11:44:03 AM UTC-8, pedro wrote:
Code officials will not be paying your utility bills. I would recommend do
ing Whole House Performance on your home. There is a balance on everything
. Too loose and bills will be higher, indoor air quality will be worse, po
ssible moisture issues in the attic(yes even in California), comfort issue
s . Too tight and mechanical ventilation will need to be added (yes this i
s better than letting the house leak)
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