As insulation saves energy it significantly decreases the generation of harmful air pollutants to the atmosphere. In fact, according to a Harvard study, insulating homes in the U.S. to even modest 2000 International Energy Conservation Code levels would reduce hundreds of thousands of tons of nitrous oxide and sulfur oxide released into the atmosphere each year.
Not only does fiber glass insulation contribute to cleaner air, it is an inherently "green" product in terms of assessing its environmental impact over its lifetime. Manufactured with recycled and renewable resources, every pound of insulation ultimately saves twelve times more energy than it takes to produce it. So along with greater energy savings, insulation delivers a measurable impact on our environment, reducing the amount of energy consumption and pollution.
Insulation also prevents the depletion of our natural resources. Today's fiber glass insulation contains more than 25% recycled glass and uses renewable resources such as sand. In fact, according to the Glass Packaging Institute, Fiber glass insulation is the largest secondary market for recycled glass containers.