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Blown in cellulose is much better than traditional fiberglass insulation at stopping all components of heat loss. By design, this product will fill all voids in insulated spaces. It is also typically installed at higher densities than fiberglass batt insulation, allowing it to be much more suitable to stop convective heat loss. The R value of this product will also be more stable in adverse weather conditions than batt products because of its higher density. Following are the typical types and means of installation:
Loose: In a blown cellulose installation, the material is simply blown into place in a loose, unconsolidated state. This is commonly done in attics, where the cellulose is supported by the ceiling beneath. Because the nature of blown cellulose causes it to settle over time, extra material is added in the initial application.
Dense Packed: Cellulose can be blown in closed cavities like walls, or cathedral ceilings, but in these situations it must be installed at greater density to prevent settling. This process is called “dense packing”, and it is an effective air barrier system.
This is the most versatile insulation product. It is spray applied, adhesive, and becomes part of the wall when installed. Which makes it perfect for exterior walls, Rim Joists and roof decks. Polyurethane also adds structural rigidity to the building components, which means it could help keep you warm while also keeping you safe! We use closed cell spray foam, because unlike open cell spray foam, it provides a vapor barrier and has a higher R value per cubic inch.
Green Seal Cellulose from FiberAmerica
2-Part Closed Cell Spray Foam from Johns Manville
I realized the first winter that I spent in my new home in Vestal New York that the insulation was insufficient. The house never had a warm comfortable feeling. The bedrooms above the garage were especially cold and the floors freezing to bare feet.
Richard F., Vestal, NY