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What's The Impact Of Blown-In Cellulose On Energy Efficiency Ratings?

April 5, 2026

Quick Answer

Blown-in cellulose insulation can increase energy efficiency ratings by reducing air leakage and providing excellent thermal insulation properties.

Benefits of Blown-in Cellulose

Blown-in cellulose insulation has been shown to achieve a 10-20% improvement in energy efficiency ratings, depending on the existing condition of the building envelope. This is due to its ability to fill gaps and seal air leaks, reducing the amount of heat that is lost through the walls, floor, and ceiling. In addition, cellulose insulation provides an R-value of R-3.5 to R-4 per inch, making it an effective thermal insulation material.

Installation Techniques for Maximizing Energy Efficiency

Proper installation techniques are essential to maximize the energy efficiency benefits of blown-in cellulose insulation. This includes ensuring that the insulation is installed to a depth of at least 2-3 inches, with a density of 3.5-4 pounds per cubic foot. It is also essential to ensure that the insulation is not compressed or disturbed during the installation process, as this can compromise its effectiveness. In addition, it is recommended to use a specialized blowing machine that is designed to deliver the insulation evenly and consistently throughout the space.

Comparative Analysis with Other Insulation Materials

Comparative analysis with other insulation materials, such as fiberglass and spray foam, has shown that blown-in cellulose insulation offers a number of advantages in terms of energy efficiency. For example, cellulose insulation is more effective at reducing air leakage than fiberglass insulation, and it is also more cost-effective than spray foam insulation. Additionally, cellulose insulation is a more environmentally friendly option, as it is made from recycled paper products and can be recycled at the end of its life cycle.

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