The technically correct approach depends on a number of factors.
Insulating your attic ceiling.
Insulate your attic outer walls and crawl space first as these areas have the most heat transfer.
Adding insulation to your water heater can reduce standby heat losses by 25 to 45 percent.
How to insulate a finished attic.
How much does attic insulation cost.
The right way to insulate attics and cathedral ceilings with batts using certain t.
That means insulating the attic floor only not the walls and having vents in the roof.
If you need to add insulation in your attic save big by blowing in cellulose insulation yourself.
Whether or not there is an inner roof lining and the total thickness of the roof structure.
Square footage of your attic.
Typical ceiling insulation involves spreading either loose fill or batt the term commonly used for blanket insulation within the attic or airspace of a home.
Type and material of your insulation.
The pros charge 1 500 to 2 000 to do a 1 200 sq ft.
You can do it yourself for about 500.
If it is located in a conditioned part of the house also remember to insulate and air seal your attic access.
Insulate and air seal any knee walls vertical walls with attic space directly behind them in your home as well.
Look for insulating pre cut jackets or blankets with an insulating value of at least r 8.
The main factors that impact the cost are.
Insulating the pitched roof.
According to home advisor insulating your attic can cost between 1700 to 2100.
Your home needs at least some type of insulation to keep the interior temperature of your home regulated regardless of the specific climate you live in.
Blown in insulation overview.
If you re finishing your attic insulating it to the proper r value can cause a dramatic loss of headroom if you limit yourself to fiberglass batts.
Insulation level are specified by r value.
If your attic is often used or perhaps you plan to convert it in the future you will need to insulate the inner surfaces of the roof.
Before insulating seal any air leaks and make roof and other necessary repairs.
The higher the r value the better the thermal performance of the insulation.
The table below shows what levels of insulation are cost effective for different climates and locations in the home.
Insulate water heaters to prevent costly energy loss.
To meet all three goals insulating your finished attic ventilating the roof and maximizing headroom use a combination of dense batt insulation rigid foam sheeting and air chutes.
A finished attic should be insulated much like the rest of the house with insulation in the walls and ceiling.