Attic Insulation Types R Value

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.

Attic insulation types r value.

The higher the r value the better the thermal performance of the insulation. Spray foam attic insulation. Achieving greater r values in exterior walls. In general an attic s r value should be between r 30 and r 49.

Recycled glass or sand that s melted and spun into fibers. While there are additional considerations such as venting and moisture problems to take into account when you insulate under floors the united states department of energy recommends an r 25 rating in cold climates and an r 11 in warmer parts of the country. 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 the home.

The r value of the insulation for every inch of thickness depends on the type of insulation. R value ratings vary among different types and forms of home insulations and among products of the same type and form. They sport insulation values of approximately r 6 5 and r 3 6 per inch respectively. In particularly cold climates you might go up to r 60.

For every type and material of insulation check the r value per inch of thickness that the manufacturer has listed. Closed cell and open cell aka 2 pound and pound respectively. R values of common types of insulation. Spray foam offers the best attic insulation performance available.

The two distinct types of attic insulation are loose fill material also commonly known as blown in insulation and batting. R value is a measure of insulation s ability to resist heat traveling through it. In general how the insulation s method of installation can give you an idea of how it compares to other types of insulation. Choose from two types.

Your home s r value score will guide you toward the type of insulation you need. Lighter in weight than cellulose or mineral wool but it settles more than those materials so you ve got to put in a thicker layer to get the protection you need. The r value per inch for different types of insulation varies depending on the. For loose fill insulation each manufacturer must determine the r value of its product at settled density and create coverage charts showing the minimum settled thickness minimum weight per square foot and coverage area per.

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.