Department of Energy and Other Research Studies

Department of Energy

Case studies from laboratories within the Department of Energy have shown similar results in Efficiency Ratings and R-values.

Fiberglass insulation.....R 3.2 per inch
32% Efficiency Rating
3.5 inches in a 2x4 wall with a 32% ER is equivalent to R11.2
Collects moisture

 

Cellulose insulation.....R 3.5 per inch
36% Efficiency Rating
3.5 inches in a 2x4 wall with a 36% ER is equivalent to R12.74
Collects moisture

 

Open cell foam insulation.....R 3.5 per inch
44% Efficiency Rating
3.5 inches in a 2x4 wall with a 44% ER is equivalent to R13.72
Collects moisture

 

Closed cell foam insulation.....R7 per inch
92% Efficiency Rating
3.5 inches in a 2x4 wall with a 92% ER is equivalent to R63.7
2 inches in a 2x4 wall with a 92% ER is equivalent to R40.18
1 inch in a 2x4 wall with a 92% ER is equivalent to R20.09
Does not collect moisture

 

Important Department of Energy Quotes Concerning Insulation

"Air infiltration can account for 30% or more of a home's heating and cooling costs and contribute to problems with moisture, noise, dust, and the entry of pollutants, insects and rodents. Reducing infiltration can significantly cut annual heating and cooling costs, improve building durability."
- US Department of Energy

"40% of energy is lost through roofs and walls insulated with fiberglass insulation..."
- US Department of Energy

"The most common insulation, fiberglass, does not stop air leakage. Certain types of insulation, such as spray foam insulation, can be significantly more effective at reducing air flow as well as heat flow."
- US Department of Energy

"Commonly installed fiberglass insulation batts lose 28% of their labeled R-value.
- Oak Ridge National Laboratory...US Department of Energy

 

The University of Florida Research Center

In this video you will see wind uplift testing performed by the University of Florida Research Center. These tests will show how foam applied to a roof deck can provide uplift strength that is almost double the strength of a category four hurricane. In this video the uniformed application of closed cell spray foam that is applied under the roof deck not only provides added insulation and creates a very energy efficient conditioned attic space. It also increases wind uplift resistance and can provide a secondary barrier against rain water intrusion. In all videos the manufactures of spray foam and thickness of materials applied may vary based on their regions and application.

 

National Institute of Science (NIST)

According to a 2005 National Institute of Science (NIST) study, energy savings of up to 62% can be realized by undertaking specific air-leakage prevention measures in homes and buildings.

 

FEMA

Only closed cell spray foam is classified as an acceptable flood-resistant material. "Flood-resistant Material" is defined as any building material capable of withstanding direct and prolonged contact with floodwater without sustaining significant damage. Closed cell foam is the only wall and ceiling insulation material classified as "acceptable."