How To Insulate Garage Ceiling Vapor Barrier

On the one hand i ve read about how air leakage is the main culprit of transporting moisture so i plan to air seal as best as i can with spray foam and caulk.

How to insulate garage ceiling vapor barrier. If you re adding new garage doors be sure to install insulated options. Without it mold and bacteria can form throughout the garage including inside of the insulation. Plastic vapor barriers should only be installed in vented attics in climates with more than 8 000 heating degree days. Install as directed typically cutting to fit and using a staple gun to attach the vapor barrier to the studs.

I live in mn and am insulating my garage ceiling in an attached garage. I want to insulate the ceiling in my garage. A vapor barrier is a plastic or foil sheet that helps block moisture from collecting where you don t want it. After the insulation is in place you will want to add a vapor retarder sometimes called a vapor barrier if you need one.

When the house was built 10 years ago the walls attached to the house were done and the ceiling was drywalled fire code. 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. I ve read the articles here and on other sites and it seems like i can t get a final decision. In hot humid climates attics should not be vented and vapor.

I m so confused about vapor barriers. Once mold starts to grow you ll have to rip out everything and start over again. This garage is located in the north cascades 2000 elevation in washington state with a typical yearly temperature range of 0f 105f. Insulating an attached garage has some special considerations that you must address differently then a unattached garage.

Not every wall does. How to insulate a garage ceiling. A vapor retarder is a material used to prevent water vapor from diffusing into the wall ceiling or floor during the cold winter. The most important issue is that attached garages must have a system in place to keep carbon monoxide co from a running vehicle inside the garage from filtering through the walls and ceiling into the house.