Insulation Learning Center
Insulation is measured by its thermal resistance or R-value. "R" is the insulations resistance to heat flow. R-value insulation ratings are used to measure insulations ability to resist heat flow. The higher the R value, the more effective the insulation. House Insulation should be purchased based on its R value, not thickness or weight.
- One type of insulation maybe thicker or thinner, but if the R value is the same they should insulate equally.
- R value performance testing is done in a 70 F environment with no air movement.
- 1 inch of insulation is = to 30 inches of concrete.
- The R value in house insulation is substantially lowered when there's any air or water/moisture leaks.
- The standard R value for house insulation varies based on climate and temperature
The U.S. Dept. of Energy has established minimum recommended insulation R-values for six distinct parts of the country, or insulation zones. Our service area is located in zone 4.
TRC is proudly serving customers in these areas
Wake Forest R-Value
Chapel Hill R-Value
Fuquay Varina R-Value
Holly Springs R-Value
Chatham County R-Value
Durham County R-Value
Lee County R-Value
Johnston County R-Value
Orange County R-Value
Wake County R-Value
Contact us directly at (919) 924-7600