Blown-In Attic Insulation

Without insulation, many homes would be uncomfortable, draft-filled shelters. This padding is what separates us from summer’s harsh heat and winter’s fierce cold. A properly insulated attic insulation can save homeowners hundreds of dollars on electricity and heating costs. Unfortunately, many find the homes they purchased lack proper insulation. The expense of having it done can be daunting however, with blow-in insulation, you can save both yourself and your wallet from discomfort.

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What is Blown-In Insulation?

Contrary to rolled or bat insulation, more commonly used in easily accessible areas like warehouses, blown-in insulation is a method in which insulation products are applied to smaller spaces – like attics, floors, and wall cavities – without much cutting into the home’s structure. Because of its improved performance and quick setting, it is the insulation market’s top competitor. Applying techniques vary depending on the product used.

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Benefits of Getting Blown-In Insulation:

Types of Blow-In Insulation

Loose-Fill Fiberglass

Installed using a blowing machine, loose-fill fiberglass is glass that has been spun or blown into fibers and is most suitable for applying in attics, ceilings, or walls. It has an R-value of 2.2-2.7 per inch and is resistant to fungus, mildew, and moisture. Loose-Fill fiberglass is not recommended as winter padding in northern extreme cold climates. Extreme cold temperatures can cause it to lose up to half of its effectiveness.

Loose-Fill Cellulose

Around since the 1920s, blow-in cellulose consists primarily of corrugated cardboard and recycled newsprint. There are three types that are used in residential applications: loose fill, wall cavity spray, and stabilized. It has an R-value of 3.2-3.8 per inch and though it is effective at all temperatures. Loose-fill cellulose’s fire retardant treatment makes it optimum for high summer temperatures. Loose-fill is not recommended for attic applications or ceilings with less than 5/8-inch drywall.

Spray-In Foam

Spray-in (or spray on) polyurethane foam extends to fill voids and empty spaces after its application, thereby reducing air infiltration. Often, professionals mix the foam after their arrival at the home. Spray-on foam is one of the most popular insulators used in ceilings, attics, floors, and walls today. Depending on the product used, can provide the highest R-value (3.6 per inch) of the three blown-in insulator materials.

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