Cellulose Insulation Vapor Barrier Attic

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.

Cellulose insulation vapor barrier attic.

You have loose fill insulation in the attic which doesn t have a vapor barrier. No if packed to a density of at least 2 6 lb cu. Stack effect is a major component to home insulation and if you are curious as to what it involves we have written a page here. Several insulation contractors have recommended loose fill cellulose attic insulation for my 1970 s era ranch in northeastern ct.

The house is heated with oil via a hydronic baseboard system. No the best option is to install un faced or loose fill fiberglass or cellulose on top of your drywall. Made from pulverized newspapers and treated with boron to resist fire and pests. Insulation is a crucial component in proper air and vapor barrier and we highlight some crucial reasons here.

Batt insulation installed over existing batt insulation to increase the attic insulation r value should be unfaced and placed perpendicular to the existing batts. Located in the attic. The insulation fiberglass or cellulose is then placed on top of the drywall with no vapor barrier above or below. An adhesive reduces its tendency to settle.

There have been no problems with the ac to date. Here is my question. Mold is a huge pain and we at green attic understand that. Infiltration of unconditioned ambient air means that heating and cooling systems must work harder to compensate for heat losses in the.

Some regions don t require a vapor barrier. Should you install a vapor barrier over preexisting attic insulation. Central ac was installed 12 years ago with equip. Blown into place dry or wet.

The best way to answer this question in addition to considering the factors above would be to talk to a professional. Good afternoon i live in buffalo ny and am remodeling my home. 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. Retrofit work attic insulation.

The theory is that part of the moisture vapor in the house is actually blocked by the drywall and paint on the. I want to dense pack the walls with cellulose insulation and loose fill the attic area. 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.