Types of Insulation and Their Benefits

Insulation Benefits

It is important to insulate the attic irrespective whether you are converting it or not. Insulation can save up to $600 in cooling and heating costs. There are several forms of insulation to choose. They include batts, blown in, barriers and spray foam. They have their pros and cons.

White spray foam being applied inside the roofing rafter

Contractor applying spray foam insulation in an attic.


They are made out of fiberglass or cellulose which is packed in rolls of varying thickness. To install you have to part with $1,500 on average. The large rolls can fit between studs and fill voids to prevent air from leaking into and out of the exterior wall. It costs $0.60 to $1.20 on average per square foot. It works best where attic has few obstructions.


You can choose between reflective or radiant barriers which can cost an average of $1,600. The insulation applies thermodynamics to increase your home’s R-value. The value represents the ability of attics to resist heat flow. The barriers work through absorbing and reflecting heat so that they can maintain moderate temperatures. The attic insulation is best in homes located in areas with warm climates. It can cost an average of $0.17 to $0.33 per square foot.

Blown-in Insulation

It costs about $1,346 to install. It is known to offer perfect insulation with high R-value. Blown insulation can cost an average of $0.26 to $0.62 per square foot. You will have to part additional $64 to $80 per hour in labor. The blown in insulation consists of white cellulose which is a paper like material manufactured from recycled cardboard and newspapers. The insulation allows easy installation in tight spots. It is also pest and moisture proof.

Spray Foam Insulation

The insulation can cost an average of $1,900. There are two types which include closed cell and open cell foam. Both can work well, but closed foam offers high R-value, in addition to the insulation being vapor and water barrier. There is also an added benefit of sound proof when you use closed cell foam insulation. It is the perfect option for attic floor insulation. Open-cell foam can cost an averageĀ of $0.40 to $0.55 per board foot. For closed-cell spray foam, it can cost an average of $0.65 to $1 per board foot.