Garage Insulation

Jim Hart · 11-11-2009, 01:58 PM

When insulating an unheated garage should I use a vapor barrier? I will use kraft faced on the ceiling so I can staple it in place prior to hanging my drywall but what about the walls?

gregzoll · 11-11-2009, 02:38 PM

If it was me, I would go with the vapor barrier, since you never know when you may want to use for other stuff (ie Guy cave, studio, body work). The better you can keep the cold from coming in during the Winter, the better you can keep it heated if you have to work for more then a couple of hours in the space.

**Gary in WA** · 11-11-2009, 05:13 PM

I definitely would! That stops the warm, moist air from rising off the car and getting the new insulation wet. Be sure to ventilate the roof above the insulation. Drywall will only slow it down with a permeability of 40. I would also use one of the paints listed, to stop the water at the surface of the drywall: http://www.panhandleinsulation.com/b...materials.html
Be safe, Gary

Jim Hart · 11-12-2009, 08:44 AM

Thanks for the advice. I'll use a vapor barrier, a good paint and yes, the attic is well ventilated.

11-11-2009, 01:58 PM	#1
Jim Hart Newbie Join Date: Feb 2009 Posts: 24	Garage Insulation When insulating an unheated garage should I use a vapor barrier? I will use kraft faced on the ceiling so I can staple it in place prior to hanging my drywall but what about the walls?

11-11-2009, 02:38 PM	#2
gregzoll Average Joe/ex-Navy IC3 Join Date: Dec 2006 Location: Midwest - Central Illinois Posts: 9,650	Garage Insulation If it was me, I would go with the vapor barrier, since you never know when you may want to use for other stuff (ie Guy cave, studio, body work). The better you can keep the cold from coming in during the Winter, the better you can keep it heated if you have to work for more then a couple of hours in the space.

11-11-2009, 05:13 PM	#3
Gary in WA Moderator Join Date: Mar 2009 Posts: 8,843	Garage Insulation I definitely would! That stops the warm, moist air from rising off the car and getting the new insulation wet. Be sure to ventilate the roof above the insulation. Drywall will only slow it down with a permeability of 40. I would also use one of the paints listed, to stop the water at the surface of the drywall: http://www.panhandleinsulation.com/b...materials.html Be safe, Gary __________________ Clothes taking longer to dry? Clean the dryer screen in HOT water if using fabric softener sheets. They leave a residue that impedes air-flow, costing you money. Clean the ducting in the last six months? 17,000 dryer fires annually!

11-12-2009, 08:44 AM	#4
Jim Hart Newbie Join Date: Feb 2009 Posts: 24	Garage Insulation Thanks for the advice. I'll use a vapor barrier, a good paint and yes, the attic is well ventilated.

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Garage Insulation