Old homes rarely have anything near that.
My attic has no insulation.
Unvented attic assemblies unvented attics rely on an air impermeable insulation installed to the roof deck s underside i e.
Preferably some at the top of the roof and some at the bottom.
Focus on the other ventilation you have in the attic.
When using insulation that has either paper or plastic facing.
Unless your roofing system has insulation on the roofing deck and is designed without ventilation your furnace should not be heating your attic.
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.
Install batting between the roof rafters for finished attic spaces.
You can use either faced or unfaced batting for this installation.
If your attic insulation covers your joists and is distributed evenly you probably have enough.
In fact the reason for your hot temperatures is due to a lack of insulation and the radiant heat from the sun.
They include rafters and ceiling joists that are damp or blackened with mold.
For diy attic insulation you ve got two choices.
Attic insulation r 50 is now the code.
Both can be added to uninsulated attics or layered over existing material.
Sometimes there is enough insulation in the middle of the attic and very little along the eaves.
Inspect the attic if your attic is not sufficiently vented you probably won t have to look very hard to find signs.
Once you ve decided which type is best for you examine the material options and prices to home in on the right product.
To see how to add insulation out to the eaves see installing rafter vents.
Loose fill or batt the common term for blanket insulation.
Install low gable vents located above the top level of the attic ceiling insulation use eye brow vents that are on the top of the sloping roof surface near the soffit eave area.
Thick insulation between 14 and 18 inches is what is needed in most cases but that s not all.
It is important that the insulation be evenly distributed with no low spots.
Attic ceiling to stop airborne moisture from reaching a cold surface and condensing inside the building envelope.