Batt vs Blown-In Attic Insulation


If you’re thinking of adding insulation to your attic, you may be wondering what the differences are between adding Batt (rolled) or Blown-In (loose fill) Insulation. 

First off, Blown-In Insulation is simply Batt insulation that has been cut into small pieces. Whether it is fiberglass or cellulose, the manufacturing process is still the same.  The insulation value is still the same per R factor (Resistance to heat flow).

The choice usually comes down to personal preference.  At All Comfort Insulation, we use Blown-In Insulation in the majority of the attics that we insulate.  The insulation is blown into the attic to a specific R factor and provides a continuous layer of insulation throughout the attic.  Ideally, no one should enter the attic and disturb the insulation after it is complete as moving the insulation around could lead to bare spots, uneven R factors and condensation issues.

Some customers prefer the Batt or rolled Insulation.  This is especially true when an attic will be entered periodically for storage, cable TV wires or to service an attic air conditioner or furnace.  Batt Insulation can be disturbed if an entire piece (usually 8’ long) is moved, however, the Batt Insulation is much harder to disturb than Blown-In Insulation just because of the physical size and characteristics of the material.  Batt Insulation can be pulled back and then reinstalled much easier than trying to redistribute Blown-In Insulation, however, Batt Insulation must be reinstalled meticulously so that no gaps are left between pieces.

It is important to point out that installing Batt Insulation is more expensive than installing Blown-In Insulation because the material is more costly and it is more time and labor intensive to install.  We will be happy to come to your home and discuss the benefits of each of the materials for your attic and your particular needs. Please give us a call today at 630-543-2626 to schedule a free estimate.


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