My Attic Has No Insulation

Once you ve decided which type is best for you examine the material options and prices to home in on the right product.

My attic has no insulation.

If you are installing a new roof consider a drip edge vent. To see how to add insulation out to the eaves see installing rafter vents. Sometimes there is enough insulation in the middle of the attic and very little along the eaves. They include rafters and ceiling joists that are damp or blackened with mold.

Attic ceiling to stop airborne moisture from reaching a cold surface and condensing inside the building envelope. Old homes rarely have anything near that. When using insulation that has either paper or plastic facing. For diy attic insulation you ve got two choices.

Unvented attic assemblies unvented attics rely on an air impermeable insulation installed to the roof deck s underside i e. Loose fill or batt the common term for blanket insulation. Inspect the attic if your attic is not sufficiently vented you probably won t have to look very hard to find signs. Focus on the other ventilation you have in the attic.

Poor insulation is usually the culprit although if you enter the attic on sunny winter day your attic space can be warmed by the sun more than your furnace. You are unable to keep the hot air from getting into the attic because there is no insulation to protect the attic from the hot air. It is important that the insulation be evenly distributed with no low spots. Thick insulation between 14 and 18 inches is what is needed in most cases but that s not all.

Install batting between the roof rafters for finished attic spaces. Preferably some at the top of the roof and some at the bottom. Attic ventilation depending on the size of the home be sure there is plenty of roof vents. Both can be added to uninsulated attics or layered over existing material.

You can use either faced or unfaced batting for this installation. Unless your roofing system has insulation on the roofing deck and is designed without ventilation your furnace should not be heating your attic. In fact the reason for your hot temperatures is due to a lack of insulation and the radiant heat from the sun.