Thinking of finishing the interior of my aunt’s garage. slab on grade construction so.california circa 1963. the common walls have been rocked & fire taped. the square of the garage is inside the rectangular house perimeter & roof system. the roof over the garge slopes up from front to back with the ridge member exposed along the top of the back wall. basically a rectangular ranch with a street facing garage, on one corner, that runs halfway back.
I’d like to insulate this and rock it, both to moderate the heat and cold ( mostly the heat), and clean it up. (too many spiders.) Also run the sheetrock up the underside of the rafters to retain the overhead storage.
Is a poly vapor barrier necessary in this climate for an unheated space?
Is roof venting through the eaves & baffles between the insulation and roof sheeting necessary?
There are no existing eave vents for the garage or the heated portion of the house.
There are two rectangular gable vents and two eye brow vents for the attic over the heated portion of the house but nothing for the garage.
All my building and renovation experience is in Alaska,an obviosly more extreme climate. I’m on a bit of working vacation/elder relative care situation. any advice would be much appreciated
Replies
I would go without the vapor barrier.
I would not go without some venting for the roof. Or go with sprayed in insul.
I would be sure of my size / spacing of my rafters.
Hard to see from here.
Remodeling Contractor just on the other side of the Glass City
Rafters are 2"X 6", 24" O.C. on a 4/12 pitch. total span is 24'9" ( ridge to outside wall)
there is a 4"X 12" spaning the garage perpendicular to the rafters at the mid span point with vertical 2"X 4"s on top connecting with the bottom of the rafters as a support. thanks for the help.