Attic Insulation R Value Map

Recommended home insulation r values.

Attic insulation r value map.

The r value of some insulations also depends on temperature aging and moisture accumulation. Insulation level are specified by r value. 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.

The table below shows what levels of insulation are cost effective for different climates and. 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. The amount and r value of your attic floor insulation depends on your geographical location zone. Having the correct amount of attic insulation can help you maintain a comfortable temperature throughout your home and help save money on your energy bills plus prevent major issues like ice dams in the winter.

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. 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. When calculating the r value of a multilayered installation add the r values of the individual layers.

Installing more insulation in your home increases the r value and the resistance to heat flow.