Installing Vapour Barrier In Attic

This acts as a barrier to keep heated moist air from rising up into the attic during cold weather.

Installing vapour barrier in attic.

Vapor barriers are usually best installed on the side of the wall that experiences the hotter temperature and moister conditions. If you are reluctant to use staples secure the barrier with duct tape instead. Most of the blanket insulation types have vapor barriers incorporated and can be very effective if installed properly. 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.

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. Never compress or fluff your insulation. Not be trapped inside. 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. You will see on which side is the vapor barrier. To assure proper protection of the vapor barrier you will need to cover the entire area of the attic. This means also the access hatch.

Attic insulation should always be installed with the paper backing facing toward the living space the ceiling in this case. Adding a second vapor barrier could cause condensation to become trapped in the insulation between the two vapor barriers. Staple it into place.