Insulating primitive garage


Old 09-10-06, 10:31 PM
Thread Starter
Join Date: Sep 2006
Location: Puget Sound
Posts: 1
Insulating primitive garage

My garage was built in 1940.It is simply 2x4 studs on 24"
centers with the siding nailed directly to them.You can actually
see light through the gaps in the boards.I've started by
using expanding foam to seal the cracks.Should I use tar
paper in between the studs?I was going to use R-13 faced
and drywall it.I do live in the northwest--in this situation,
should I face the Kraft paper out or in?Should I add a vapor barrier between the drywall and the insulation?(I did install
A 12" gable vent on each end)Thanks for any help you can
give me-I'm a machinist not a carpenter!
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Old 09-21-06, 02:31 PM
Join Date: Sep 2006
Posts: 15
I would seal the gaps between the siding boards first before doing any insulation. Silicone caulk should do a good job. You don't want water getting into the new insulation and drywall.

The Kraft paper on the insulation acts as a vapor barrier, so no need for an additional vapor barrier. The paper should be toward the heated space, or facing the inside of the garage, just below the drywall.
Old 09-21-06, 02:46 PM
Ed Imeduc's Avatar
Join Date: Aug 2002
Location: Mountain Williams Missouri
Posts: 18,389

We put the paper back insulation in the studs paper to the room side staple the paper lip inside the stud. Run a 4 mil poly over the whole wall windows and doors . Then drywall . This is so you dont have any bumbs in the dry wall from all that paper over lap on the studs from the insulation. Gives you a better V/B . When you done with tape and paint cut the V/B off the windows and doors and they are all clean .


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