The main factors that impact the cost are.
Insulating attic walls roof.
If only the living space will be insulated wrap the insulation around the room s walls and ceiling and then continue along the floor of the non living space.
Proper attic insulation is the best way to prevent heat loss in the winter and retain cool air in the summer.
According to home advisor insulating your attic can cost between 1700 to 2100.
Choose the fiberglass blanket or batting product that will provide the r value your house.
In this case the area behind the knee wall will be uncomfortably hot or cold.
So it s time to pay close attention to what s happening up there.
Contractor or insulation installer s fee.
Most codes require a specified minimum amount of headroom and it s tough to meet this requirement when insulating a finished attic especially since most codes require insulation equal to r 38 or more.
There are two basic ways to insulate a finished attic.
Before insulating vaulted attic walls you must provide an unobstructed route from the soffit vents to an exit vent to prevent damage to the roof from moist hot air.
Square footage of your attic.