Attached Garage Insulation

[PALYDIN11]

I have the following situation on a unfinished attached garage.

Attached garage with the wall attached to the dwelling insulated and drywall applied

The house has the exterior wrap.
I want to insulate and finish the other 2 walls.
I have the following question.
Do I need to still add a vapor barrier on the inside between the insulation and dry wall? Thanks. Attached photo is not my garage but similar to what I will have after I install the drywall. Thanks.

 

[seanc_mt]

Plastic sheeting is relativity inexpensive do it for piece of mind. in my shop i have tyvek, 1" of spray foam, r21 paper back insulation then 7mm plastic sheeting. the less air intrusion the more efficient your building will be.

 

[kd3pc]

In many jurisdictions the wall "between" the garage and the dwelling must be fire rated..you might want to factor that in to the process at this time

 

[PALYDIN11]

In many jurisdictions the wall "between" the garage and the dwelling must be fire rated..you might want to factor that in to the process at this time

I sure hope so. The wall between the garage was insulated and drywall applied when I purchased the home.

 

[PALYDIN11]

Plastic sheeting is relativity inexpensive do it for piece of mind. in my shop i have tyvek, 1" of spray foam, r21 paper back insulation then 7mm plastic sheeting. the less air intrusion the more efficient your building will be.

Got it. Thanks for the advice.