| Heat Flow |
| Heat flows naturally from a warmer to a cooler space. Insulation resists this flow of heat, and helps keep your home warmer in winter and cooler in summer. |
| Insulation Value |
| Insulation value is commonly referred to as resistance-value or R-value. R-value is the measure of a material's ability to resist heat flow. The higher the R-value, the more effective the insulation is in reducing heat flow. |
| Building Material |
| Common building materials, such as wood, brick and concrete used in homes, do not have high R-values. Insulation is needed to supplement these materials in order to keep your energy use as low as possible. One inch of insulation fiber has approximately the same insulating value as 30 inches of concrete. |
| Fire safety |
Fiber glass insulation is made from sand and other inorganic materials which are melted and spun into fiber glass. Fiberglass is naturally noncombustible and remains so for the life of the product. It requires no additional fire-retardant chemical treatments.
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