Attic Insulation R Value Map

These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation.

Attic insulation r value map.

When calculating the r value of a multilayered installation add the r values of the individual layers. The r value of some insulations also depends on temperature aging and moisture accumulation. Installing more insulation in your home increases the r value and the resistance to heat flow. R value insulation chart 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.

The map and chart show each region of the u s the subsequent zones and corresponding r values. The higher r value the better insulation performance. Find your zone on the map and then use the above insulation r value chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces. R value is a measure of insulation s ability to resist heat traveling through it.

If you think you re among the 90 of us homes that are under insulated 1 performing a simple insulation inspection will help you determine your insulation needs. Insulation level are specified by r value. 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.

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