Installing Vapour Barrier In Attic

You will see on which side is the vapor barrier.

Installing vapour barrier in attic.

Never compress or fluff your insulation. Vapor barriers are usually best installed on the side of the wall that experiences the hotter temperature and moister conditions. This acts as a barrier to keep heated moist air from rising up into the attic during cold weather. As you work sweep your hand across the surface to push out air and keep the barrier flat.

Staple it into place. The best approach for a vented attic in a cold climate is installing a layer of drywall with a good coat of latex paint the paint creates a semi permeable vapor barrier. This means also the access hatch. Gradually roll the barrier out and use your chosen method to secure it at regular intervals.

Most of the blanket insulation types have vapor barriers incorporated and can be very effective if installed properly. Attic insulation should always be installed with the paper backing facing toward the living space the ceiling in this case. Not be trapped inside. The insulation fiberglass or cellulose is then placed on top of the drywall with no vapor barrier above or below.

Vapor barriers in attics should only be installed on one side of the insulation. Since some leakage of moisture into the insulation in inevitable murphy s law you want it to be able to freely escape from the insulation into the attic. If you are reluctant to use staples secure the barrier with duct tape instead.