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Hi everyone, new to this forum, so here's my first post.
I would like to install knotty pine car siding to the interior walls and ceiling of a new addition (basically a 3 season room). Ceiling is vaulted (4/12 pitch), 5 windows, and 1 man door. Room is conected to main house with access through an 8' sliding door. The room is completely insulated with vapor barrier.
Now for the question: What substrate should I use behind the 5/8" car siding? My idea is to use 7/16" OSB over the 16" OC studs and ceiling rafters for more nailing surface. I plan to run the car siding horizontally on the walls and perpendicular to the ceiling rafters.
I had the electrician place all boxes away from the studs to allow for this.
Should I worry about expansion/ contraction of the wood car siding? This is in northern Indiana, and the room does not have a direct heat source, other than warm air filtering from existing house through the opened sliding glass door. A small electric room heater will probably be used at times.
Thanks, Chris M