Cellulose Insulation Vapor Barrier Attic

The insulation fiberglass or cellulose is then placed on top of the drywall with no vapor barrier above or below.

Cellulose insulation vapor barrier attic.

Most forms of attic insulation benefit from the addition of a vapor barrier to protect them from the harmful effects of moisture which can reduce their effectiveness over time the following are a few simple steps to help you undertake the task properly so your vapor barrier retains heat without damaging the insulation. This really helps prevent trapped moisture between a traditional vapor barrier and the drywall. In this case use r 38 insulation as recommended above by energystar. A recent one on cellulose insulation and air vapor barriers one of a flurry on the topic tipped the scale toward a broader response as we continue to dispel this enduring myth.

But you do need to perform air sealing work before beginning the insulation job. Good afternoon i live in buffalo ny and am remodeling my home. Cellulose insulation has a high density compared to fiberglass. With modern s cellulose insulation a vapor barrier is not recommended except in very cold weather or high moisture areas such as spas or pool buildings.

Insulation labs is a name to reckon with for efficient vapor barrier installation services. If the batts are your only layer meaning the attic joists are currently uninsulated you should install them with the vapor barrier down facing your living area below. However many building codes do require an air barrier or vapor retarder to be installed. This article explains the necessary work.

You have made the bold decision to insulate your attic. Now with attic insulation heat is no longer lost from the living space such that moisture may remain trapped in the attic vapor barriers were therefore necessary to reduce moisture flow into the attic. If you decide to go ahead with the plan to install cellulose on the attic floor you don t need a vapor barrier. What if you find asbestos in your attic.

Blow in cellulose insulation seals houses better by limiting the air flow not only through the insulating material but also around difficult to insulate areas such as the gaps around electrical boxes wiring and plumbing. To stop the movement of vapor effectively through air leaks your vapor barrier should also have an air barrier such as an airtight drywall ceiling. Check your local building codes for compliance. Air sealing an attic.

With our vapor barrier installation services there will be no issue of the crawl space of your home becoming a residence for pests bats and rodents. Cellulose insulation can also handle non standard or off center wall stud spacing areas better than batts. I want to dense pack the walls with cellulose insulation and loose fill the attic area.