In hot humid climates attics should not be vented and vapor.
Insulating garage ceiling vapor barrier.
If you re using old uninsulated doors pick up a retrofit kit that add insulating panels.
Vapor barriers keep the air moisture in your house from condensing in the insulated cavities.
I want to insulate the ceiling in my garage.
Install as directed typically cutting to fit and using a staple gun to attach the vapor barrier to the studs.
Not every wall does.
Plastic vapor barriers should only be installed in vented attics in climates with more than 8 000 heating degree days.
I m considering insulating and drywalling my garage which already has insulated garage doors.
After the insulation is in place you will want to add a vapor retarder sometimes called a vapor barrier if you need one.
If you re adding new garage doors be sure to install insulated options.
A vapor retarder is a material used to prevent water vapor from diffusing into the wall ceiling or floor during the cold winter.
If you live in a hot humid climate.
You can forego the plastic and use a vapor retarder kraft faced insulation or latex ceiling paint in all other climates except hot humid or hot dry climates.
If you live in a cold climate place the vapor barrier between the interior of your home and the insulation.
Whether your vapor barrier is a facing or a film it must be placed on the warm in winter side of the wall.
My main goal is to keep it from getting much below freezing during the winter.
When the house was built 10 years ago the walls attached to the house were done and the ceiling was drywalled fire code.