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Garage insulation installation

7 years ago

I am in the process of building a house and the garage is unheated and uninsulated. The builder is allowing me to throw in the insulation before the drywall crew starts to save me some money. A little background information. The garage is unheated bur I plan to install a propane heater of some sort at some point later down the road. This is a 2 story with the bedroom above the garage. The house is wrapped and taped with tyvek and the side of the garage will be covered in stone. My plan was to just put kraft faced R19 insulation and be done. Do I need a vapor barrier over the insulation or is the tyvek on the outside good enough. The drywall crew will be gluing and screwing all of the drywall. If I have kraft faced insulation stapled to the studs and/or vapor barrier how will the drywall stick to the studs and not the insulation? Any suggestions would be helpful thanks.

Featured Answer

PRO

PPF.

7 years ago

It's fastened to the sides.

As for the vapor barrier, how was/is the house done?

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Comments (6)

omelet
7 years ago
last modified: 7 years ago
Ours was installed similarly. Our builder used non-formaldehyde insulation (knauf ecose).
corydel2747 thanked omelet
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geoffrey_b
7 years ago
The kraft paper is the vapor barrier.
corydel2747
Original Author
7 years ago
OK looks good I thought the kraft sided tabs flipped out and were stapled to the outside of the stud and not the inside. They haven't started insulating the house yet so as far as I am aware they do as pictured but I'm not sure of an additional vapor barrier. My thoughts were the plastic membrane or tyvek type material over the insulation. Is that extra layer necessary. If I can get away with kraft faced stapled to the studs and that is it I am ok with that I just didn't want to have sweating and moisture later on when I heat the garage and have problems.
geoffrey_b
7 years ago
Like I said "the kraft paper is the vapor barrier." You don't want two.

Also make sure you have double glazed windows. Also make sure you have adequate venting for the propane heater.
corydel2747 thanked geoffrey_b
worthy
7 years ago
If there is conditioned space above your garage, the batts are virtually useless. Properly applied closed cell spray foam is a must.

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