Attic Insulation R Value Map

The amount and r value of your attic floor insulation depends on your geographical location zone.

Attic insulation r value map.

You ll see insulation r values indicated on product packaging and often on the product itself. R value is a measure of insulation s ability to resist heat traveling through it. The higher the insulation r value the greater the insulating power. When calculating the r value of a multilayered installation add the r values of the individual layers.

In general an attic s r value should be between r 30 and r 49. In particularly cold climates you might go up to r 60. Installing more insulation in your home increases the r value and the resistance to heat flow. R value requirements are different based on your location.

Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. Colder climates will typically require a higher r value for even greater thermal. Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces. Insulation is identified and labeled by r value.

Insulation level are specified by r value. Install insulation with the proper r value. How do you figure out r value. Your home s r value score will guide you toward the type of insulation you need.

The r value of some insulations also depends on temperature aging and moisture accumulation. The table below shows what levels of insulation are cost effective for different climates and. The r value or r value is a measure of thermal resistance ability to resit heat traveling through it used in the building and construction industry. R value refers to the insulation s ability to resist heat flow.

The higher the r value the better the thermal performance of the insulation. The greater the r value the greater the insulating performance.