Installing Vapour Barrier In Attic

Not be trapped inside.

Installing vapour barrier in attic.

Vapor barriers in attics should only be installed on one side of the insulation. Most of the blanket insulation types have vapor barriers incorporated and can be very effective if installed properly. Gradually roll the barrier out and use your chosen method to secure it at regular intervals. Vapor barriers are usually best installed on the side of the wall that experiences the hotter temperature and moister conditions.

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. Adding a second vapor barrier could cause condensation to become trapped in the insulation between the two vapor barriers. 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. As you work sweep your hand across the surface to push out air and keep the barrier flat.

Attic insulation should always be installed with the paper backing facing toward the living space the ceiling in this case. Never compress or fluff your insulation. This acts as a barrier to keep heated moist air from rising up into the attic during cold weather. To assure proper protection of the vapor barrier you will need to cover the entire area of the attic.

Staple it into place. You will see on which side is the vapor barrier. This means also the access hatch.