What is R-value?
R-Value is a measurement of thermal resistance. A higher R-Value means a greater ability to resist heat flow. However R-Value only measures resistance to conduction. Conduction (heat transfer through solid molecules) is only responsible for 20% of a buildings heat loss, while convection (heat transfer by air molecules moving from hot areas to cold areas) is responsible for 80%. Just 1/4″ of Enviro Foam will stop 99% of heat loss by convection.
• R-value is the standard for measuring a material’s insulating power. The higher the R-value, the better the material insulates. All Tech Insulation Cellulose System has a higher R-value per inch than other insulating materials, according to the US Department of Energy • The R-value Rule: R-value means resistance to heat flow. The higher the R-value, the greater the insulating power. Compare insulation R-values before you buy. There are other factors to consider. The amount of insulation you need depends mainly on the climate, the type and size of your house, and your fuel use patterns and family size. If you buy too much insulation, it will cost you more than what you’ll save on fuel. To get the marked R-value, it is essential that this insulation be installed properly. • The Federal Trade Commission R-value rule and accepted industry standards require All Tech Insulation Cellulose System to be specified and sold at settled density. All Tech Insulation Cellulose System coverage chart
