Which Insulation Is Best For Attics

They sport insulation values of approximately r 6 5 and r 3 6 per inch respectively.

Which insulation is best for attics.

For diy attic insulation you ve got two choices. The higher the r value the better the thermal performance of the insulation. Spray foam offers the best attic insulation performance available. Once you ve decided which type is best for you examine the material options and prices to home in on the right product.

Spray foam attic insulation. Types of attic insulation material. Rolls and batts are produced of mineral wool and fiberglass. Modern technology of blanket insulation today is considered the best insulation for attic.

Choose from two types. Both can be added to uninsulated attics or layered over existing material. Closed cell and open cell aka 2 pound and pound respectively. 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.

Though r value is a the higher the better measurement the insulation material with the highest r value isn t necessarily the best choice for your house. Loose fill or batt the common term for blanket insulation. Achieving greater r values in attics 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.

Insulation level are specified by r value. Different insulation materials have unique strengths and weaknesses and some attics will be more suited for certain material than others. Before you ever get insulation anywhere near the attic though make sure that you get the air leakage sites sealed up. Loose fill insulation is great for installing in attics with very little headroom.

Among commonly used types of insulation there are mineral wool or fiberglass rolls and batts rigid fiberglass board loose fill materials cellulose mineral wool etc. Attics unfinished walls ceilings and floors especially in hot climates reflective or radiant barriers work differently than most types of insulation and so its effectiveness is not. Proper attic insulation is the best way to prevent heat loss in the winter and retain cool air in the summer. R value is a measure of insulation s ability to resist heat traveling through it.

If you put an air permeable insulation material over a hole in your ceiling you may have comfort indoor air quality durability and efficiency problems.