Insulation Guide                   

Insulation levels are specified by R-Values, a measure of insulation’s ability to resist heat traveling through it. The higher the R-Value, the better the thermal performance of the insulation. The table below shows what levels of insulation are cost-effective for different climates and locations in your home.

Converting from U-values to R-values
R-value is a measure of thermal resistance used in construction.
U-value is a measure of overall heat transfer coefficient

To convert from one to the other use the following formulas:

1/R-value = U-value   or   1/U-value = R-value

Example: R-19 (common for walls) = 1/19 = U-Value of .053

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Click this picture to learn about Heat Recovery Ventilation (HRV) vs Energy Recovery Ventilation (ERV) systems and recommended uses

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