Insulating / finishing an attic crawl space with a partial kneewall
Disclaimer: I have no idea what I’m doing.
I’m in Northern California (Zone 3C), so keep that zone in mind. I believe I have less to worry about in terms of extreme temps for any length of time.
I’ve got a story and half bungalow with a good size attic space that includes a knee wall against a bedroom and beyond that a shorter roof.
You can see the small access door to the space. The knee wall runs just over half the length of the space and has no ridge vents. Just beyond that is the shorter roof line which has vents for another 5 feet or so.
I want to seal this entire space up with insulation and sheet rock or maybe something simpler? It won’t be living space but I don’t know if foam board or some other type of flexible material will do.
So this hybrid attic crawl space seems like a bit of challenge.
I’m thinking I need to completely seal up the vents in the eaves that lead to the knee wall, since there’s nothing there to vent and use faced insulation (faced toward roof).
On the side where the roof line actually reaches the ridge vent, I want to do the typical foam baffles with unfaced insulation to direct airflow, but I’m not sure. Maybe this is overkill for my area.
My ultimate intent is to simply make this a usable storage space with a reasonable amount of temperature control as it currently is very cold in the winter and unbearably hot in the summer.
Any advice appreciated!
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