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.

Made from pulverized newspapers and treated with boron to resist fire and pests. The house is heated with oil via a hydronic baseboard system. There have been no problems with the ac to date. I want to dense pack the walls with cellulose insulation and loose fill the attic area.

The insulation fiberglass or cellulose is then placed on top of the drywall with no vapor barrier above or below. Radiant barriers radiant barriers shall be installed on top. 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. Here is my question.

The best way to answer this question in addition to considering the factors above would be to talk to a professional. Infiltration of unconditioned ambient air means that heating and cooling systems must work harder to compensate for heat losses in the. Retrofit work attic insulation. Central ac was installed 12 years ago with equip.

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. Insulation is a crucial component in proper air and vapor barrier and we highlight some crucial reasons here. 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.

Good afternoon i live in buffalo ny and am remodeling my home. Some regions don t require a vapor barrier. Kraft faced batt insulation should not be installed between roof rafters if the attic is vented. You have loose fill insulation in the attic which doesn t have a vapor barrier.

Should you install a vapor barrier over preexisting 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. Mold is a huge pain and we at green attic understand that. Several insulation contractors have recommended loose fill cellulose attic insulation for my 1970 s era ranch in northeastern ct.

The theory is that part of the moisture vapor in the house is actually blocked by the drywall and paint on the. Located in the attic. Blown into place dry or wet.