Garage walls and insulation

[Emaisch1080]

Hey guys. First post here. I’m in a new to me house and I lost my old detached garage/shop. This house has an attached 2 car garage. Aprox 20x20. No living space above. I’m setting it up for a woodshop. I just tore down the drywall on one noninsulated wall exterior wall. The other 2 walls should be insulated since they are connected to the house. My question is, should install a vapor barrier over the insulation before I cover it or is the backing paper enough? I will be drywalling and then adding tongue and groove pine. I plan on installing some kind of heat source to take the chill off when I’m working in there. Probably electric radiant. Has anyone else installed t&g on the walls? Can I leave in unfinished? Pics would be awesome. Thanks a lot. I’ll be on here a lot sucking up your wisdom

 

[Emaisch1080]

Anyone?

 

[willymakeit]

Where do you live? I don't normally see paper back used with vapor barrier.
I personally like the walls between house and garage insulated.
Is the attic insulated over the garage?

 

[Patrobot]

I normally only double up the vapor barrier in a living space where there is a lot of warm, humid air, however tacking a sheet of poly up on the other hand is cheap and helps kill that last bit of air propagation into your building.

 

[stm317]

Paper facing on insulation is supposed to be an adequate vapor barrier.

 

[tjpavlov]

Wood walls might be a code issue. Usually you need a fire stop.

 

[Black Oak]

I could do wood wall covering but I'm in a tiny town with no codes to obey. Chances are a fire rated material is needed on at least the common walls.

 

[Emaisch1080]

Where do you live? I don't normally see paper back used with vapor barrier.
I personally like the walls between house and garage insulated.
Is the attic insulated over the garage?

I live in the suburbs of Philadelphia pa. The attic is open. There is only like 6 20’ 2x6s spanning the Garage. I will most likely add more and insulate it in the future.

 

[Emaisch1080]

Wood walls might be a code issue. Usually you need a fire stop.

It might be but I’m going to have drywall underneath it. I thought that would be exceptable. Who would I ask to find out if that is Ok.