Installing Vapour Barrier In Attic

Not be trapped inside.

Installing vapour barrier in attic.

Adding a second vapor barrier could cause condensation to become trapped in the insulation between the two vapor barriers. Never compress or fluff your insulation. To assure proper protection of the vapor barrier you will need to cover the entire area of the attic. You will see on which side is the vapor barrier.

This means also the access hatch. As you work sweep your hand across the surface to push out air and keep the barrier flat. Gradually roll the barrier out and use your chosen method to secure it at regular intervals. This acts as a barrier to keep heated moist air from rising up into the attic during cold weather.

The insulation fiberglass or cellulose is then placed on top of the drywall with no vapor barrier above or below. The inner surface in colder climates and the outer surface in hot humid climates. Staple it into place. Most of the blanket insulation types have vapor barriers incorporated and can be very effective if installed properly.

If you are reluctant to use staples secure the barrier with duct tape instead. Attic insulation should always be installed with the paper backing facing toward the living space the ceiling in this case. 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.