One fiber per cubic centimeter of air. On this site, 1 f/cc refers to the permissible exposure limit identified as the appropriate exposure level for fiber glass, rock wool and slag wool insulation products. 1 f/cc is the ACGIH TLV, the HSPP voluntary exposure limit, the National Academy of Sciences recommended exposure level, and the State of California’s established PEL for fiber glass and rock and slag wool insulation fibers.
A home insulated with fiber glassA material consisting of glass fibers used in making various products, including yarns, fabrics, insulation, and structural objects or parts. Fiber glass is resistant to heat and fire., rock woolA synthetic vitreous fiber insulation made by melting predominantly igneous rock and other inorganic materials, and then physically forming them melt into fibers. See Mineral Wool., and slag woolMan-made material made primarily from iron ore blast furnace slag. insulation is one of the most cost-effective ways of saving energy and reducing heating and cooling bills. In fact, if your home is as little as 5 to 10 years old, you likely have one of the 46 million under-insulated homes in the U.S. according to the Harvard School of Public Health.1 Adding batt or blown-in insulation is easy, and it is one of the lowest cost options for improving the energy efficiency of your home. Fiber glass, rock wool, and slag wool insulationMan-made material made primarily from iron ore blast furnace slag which is spun into a fibrous form. also:
- Improves comfort
- Provides a healthier environment
- Provides added sound control
- Helps lower energy bills
- Provides a lifetime of energy saving
Things to consider when choosing an insulation product include:
- Ease of application
- Thermal performance
- Value
However, you should also consider the overall lifetime performance of an insulation product as well as its related safety aspects prior to purchase and installation.
1. Jonathan Il. Levy, Yurika Nishioka and John D. Spengler, "The public health benefits of insulation retrofitsThe application of additional insulation over existing insulation, new insulation if old insulation has been removed, or new insulation over existing, previously uninsulated surfaces. in existing housing in the United States, " Environmental Health: A Global Access Science Source, April 2003. pp1-16.
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