Installing Vapour Barrier In Attic

If you are reluctant to use staples secure the barrier with duct tape instead.

Installing vapour barrier in attic.

Staple it into place. The insulation fiberglass or cellulose is then placed on top of the drywall with no vapor barrier above or below. Gradually roll the barrier out and use your chosen method to secure it at regular intervals. As you work sweep your hand across the surface to push out air and keep the barrier flat.

Most of the blanket insulation types have vapor barriers incorporated and can be very effective if installed properly. The inner surface in colder climates and the outer surface in hot humid climates. Attic insulation should always be installed with the paper backing facing toward the living space the ceiling in this case. 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.

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. 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. Vapor barriers in attics should only be installed on one side of the insulation.

Adding a second vapor barrier could cause condensation to become trapped in the insulation between the two vapor barriers. This means also the access hatch. Never compress or fluff your insulation.