A more traditional insulation choice, fiberglass insulation is a cost-effective, energy-saving product that is made from sand and recycled glass.
It has helped make the insulation industry more efficient by reducing energy loss and decreasing production costs.
By avoiding the added energy needed to heat and cool buildings, fiberglass insulation continues to be a benefit to the environment by helping to reduce pollution emissions.
While the energy savings from fiber glass insulation are significant, so are the environmental benefits.
By making buildings more energy efficient, fiberglass insulation helps reduce the amount of fossil fuel combustion needed to heat and cool homes, businesses, and factories. That, in turn, decreases the amount of carbon dioxide emitted into the atmosphere.
Fiberglass insulation is the most common residential insulating material and is usually applied as batts of insulation, pressed between studs. Compressing fiberglass reduces its effectiveness. Cutting fiberglass to accommodate electrical boxes allows gaps through the wall cavity. Gaps between batts can enable air infiltration or condensation and requires careful installation. Sealing cracks and using vapor barriers are necessary to ensure optimum performance. Air infiltration can be minimized by adding a layer of cellulose insulation on top of the fiberglass.
In the 1970s, many states sought to improve building code requirements and fiberglass batts became the preferred choice for residential construction, even though there is no inherent advantage to batts. At the same time, a major fiberglass company lobbied building officials that administered U.S. building codes in order to increase sales and eliminate competitive insulation materials. Today, green building practices shun fiberglass insulation because it is energy intensive to manufacture.