Cellulose Insulation Vapor Barrier Attic

Made from pulverized newspapers and treated with boron to resist fire and pests.

Cellulose insulation vapor barrier attic.

Several insulation contractors have recommended loose fill cellulose attic insulation for my 1970 s era ranch in northeastern ct. Air vapor barriers with cellulose insulation air infiltration and exfiltration has a major impact on the r value that insulation delivers and as a result on the thermal performance of an insulated dwelling. Central ac was installed 12 years ago with equip. Retrofit work attic insulation.

Batt insulation installed over existing batt insulation to increase the attic insulation r value should be unfaced and placed perpendicular to the existing batts. Here is my question. No if packed to a density of at least 2 6 lb cu. Some regions don t require a vapor barrier.

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. The house is heated with oil via a hydronic baseboard system. Good afternoon i live in buffalo ny and am remodeling my home. Mold is a huge pain and we at green attic understand that.

Whether using loose fill or batts put the vapor barrier closest to the warm side of your installation where hot moist air would get in facing the house s interior in cold climates beneath floor insulation and the attic s interior in hot climates on top of floor insulation. Located in the attic. Attic vapor barrier detail for cold climates 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. No the best option is to install un faced or loose fill fiberglass or cellulose on top of your drywall.

I want to dense pack the walls with cellulose insulation and loose fill the attic area. Infiltration of unconditioned ambient air means that heating and cooling systems must work harder to compensate for heat losses in the. Radiant barriers radiant barriers shall be installed on top. Insulation is a crucial component in proper air and vapor barrier and we highlight some crucial reasons here.

The best way to answer this question in addition to considering the factors above would be to talk to a professional. The theory is that part of the moisture vapor in the house is actually blocked by the drywall and paint on the. Blown into place dry or wet. You have loose fill insulation in the attic which doesn t have a vapor barrier.

There have been no problems with the ac to date. Should you install a vapor barrier over preexisting attic insulation. The insulation fiberglass or cellulose is then placed on top of the drywall with no vapor barrier above or below.