Highest R Value Insulation For Attic

R value is a measure of insulation s ability to resist heat traveling through it. 6 305 btu hour 0 53 ton r 4 2 duct insulation. They sport insulation values of approximately r 6 5 and r 3 6 per inch respectively.

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Closed cell and open cell aka 2 pound and pound respectively.

Highest r value insulation for attic.

Insulation level are specified by r value. The higher the r value the better the thermal performance of the insulation. Just how much you need for your residential or commercial building depends on a number of factors such as your heating system and location. You will need a higher r value of insulation if you live in the northeast than if you live in southern california.

The table below shows what levels of insulation are cost effective for different climates and. Recycled glass or sand that s melted and spun into fibers. How often do you think you get the full labeled r value. 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.

Where you live different climates require different insulation r values. The higher the r value the greater the performance of the insulation. 7 948 btu hour 0 66 ton the numbers are even higher for the additional heating load. Choose from two types.

Your home s age if your home is more than 10 year old you likely need more insulation. Recommended home insulation r values. The r value for loose fill attic insulation is 3 3 inch thickness and is laid between the attic joists. Achieving greater r values in exterior walls.

In particularly cold climates you might go up to r 60. Cavity wall insulation polyurethane foam has the highest r value 6 5 inch thickness of all the spray in insulation but it is also the most expensive. An insulation r value chart or table can assist you with the calculation to ensure your attic or wall r values are adequate for your. Spray foam offers the best attic insulation performance available.

Spray foam attic insulation. Some other factors to consider. There are many ways to retrofit a home with fiberglass and. The duct insulation r values i mentioned above are what s on the product label.

The higher the r value the better the thermal performance of the insulation. In general an attic s r value should be between r 30 and r 49. Your home s r value score will guide you toward the type of insulation you need. You can achieve better thermal performance in your attic by adding an additional layer of insulation.

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