The doe recommends r 49 or better for good energy efficiency and interior.
My attic is cold.
Attic ventilation is vital to the upkeep of your home so make sure it is installed and functioning correctly.
Ask an insulation specialist to evaluate your needs.
Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.
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.
What about my attic insulation.
Now that the house is properly sealed it is crucial to verify the attic s thermal insulation is adequate and properly installed.
Now if the ridge vent is only partial or if the attic air temperature is excessive 20.
If your attic is too cold it probably lacks sufficient protection from outside temperatures.
Attics can be insulated against heat and cold.
While heat migrates in the summer because your attic is acting as a giant pressure cooker in the winter the attic space is colder allowing more room for the heat to rise and bring all that warm cozy moisture with it.
The natural air flow created by a properly vented attic will move hot air out of the home.
Thanks to the stack effect attics are uniquely troublesome.
So if it s cold outside and attic is cold more attic insulation obviously to keep house warmer and help with controlling heat loss.
The insulation on the floor of your attic needs to have an approved vapor barrier installed on the warm in winter side of the insulation.
According to the u s.
To understand why attics cause problems in winter it helps to know a little building science.
Department of energy doe the average unimproved attic has just r 19 insulation the insulation value of a five and a half inch thick fiberglass batt.
Intake vents located at the lowest part of the roof under the eaves allow cool.
It works together with the attic insulation which will ensure hot air does not enter the attic from outside.
Ridgevent how is the air intake on the house.