As you ve discovered since you already had insulation in your attic the layer of new insulation you added should have been unfaced to prevent moisture from becoming trapped between the layers.
Faced or unfaced insulation in attic over garage.
A garage attic also should be insulated is if there is an air conditioned room above the garage.
The facing contains a thin layer of asphalt which acts as a vapor barrier to block moisture.
Insulation is used reduce the transference of heat between conditioned area your house and non condition areas garage and outdoors.
Here s what you need to know about the facing on attic insulation.
Attic insulation is available with and without a paper facing.
The insulation will keep the naturally hot or cold air in the garage and the artificially warmed or cooled air in the room above it.
Simply peel the facing paper off the top layer of insulation.
Fiberglass is the most commonly used type of insulation in garages just as it s the most popular type in homes.
You can also get loose fill fiberglass which it suitable for blowing into a garage attic space above a finished ceiling.
If you decide to use faced batt insulation instead fit it facing toward the room above the garage.
Before installing insulation in garage walls clear the area inside your garage of any obstacles.
The same applies to faced unfaced and other kinds of insulation products.
The good news is that the solution to your problem isn t that difficult.
It s sold in pre cut batts and long blankets that fit between wall studs and ceiling joists.
Staple it into place by tacking every eight inches or so and take care not to tear away the facing of the insulation.
Whether you choose faced or unfaced insulation for the attic depends on the.
Add vapor retarder to avoid problems arising from the condensation of water droplets on it especially during winters.
For many contractors the decision to use one kind of insulation over the other depends solely on preference rather than a by the book decision making process.
It s important to use the right type of insulation to prevent moisture problems in your attic.
If you do not heat or cool an area it is considered to be unconditioned.
After insulating the attic of your garage your garage will be the same temperature as the outside in the shade.