Should you put plastic over insulation in attic?

Plastic is not recommended in this situation because it would create a second vapor barrier that could trap moisture and cause condensation and mold. Craft paper would have the same problem, as it's most likely on the other side of the insulation to form the vapor barrier you want. Never install a vapor barrier over existing insulation, as it will only damage the roof. The correct way to install one is to first remove existing insulation and then install a vapor retarder.

You can then install a new layer of insulation over the barrier to completely seal the attic. You should always install the vapor barrier before installing the insulation. In this way, voids will not form in the insulation that allow moisture to enter the cavity of the wall, the joist of the floor or the floor of a mezzanine. Once the vapor barrier is installed, you can install the insulation.

The way I see it, you have two alternatives here. You can add 8-inch uncoated fiberglass blocks, called attic blankets, on top of the rest of the blown insulation. Tell your children to place them perpendicular to the elements of the structure, keeping them as close together as possible. One thing you should always keep in mind when adding any type of insulation to the attic is that the attic's ventilation is not inadvertently obstructed. That can cause a lot of moisture-related problems.

So be careful not to push the blocks too far toward the eaves. Attic insulation doesn't always need a vapor barrier, but if you live in a climate with colder winters, you may need to install one. If you're looking to clean attics in Orange County, San Diego or Phoenix, Attic Construction is just a phone call or email away. Always install a vapor retarder inside the insulation if you live in a colder climate, as the climate will remain cold or mild for most of the year. On rare occasions, you may need to install an insulated vapor barrier in the attic if you live in climate zone 4 or 5, although this is usually not necessary.

Vapor barriers provide a shield between the exterior walls and the insulation of the house, keeping the insulation dry in case moisture tries to infiltrate it. Don't worry about the stress and challenge of measuring, placing and installing vapor barriers and insulation. Homes with absorbent siding are more likely to retain moisture, so you'll need to install the retarder outside of the insulation. However, manufacturers did not introduce vapor barriers until the arrival of non-porous insulation for attics.

In such climates, a vapor barrier can prevent moisture from accumulating in the attic without compromising the home's insulation system. Vapor barriers with low permeability prevent more water vapor from entering and are more effective at protecting attic insulation in colder climates. If you're wondering if isolation can make you sick, be sure to read up on the topic to make sure you and your family are safe from any isolation issues. However, if you live in a cold climate with moderate summers, your attic insulation will benefit from a retarder.

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