Highest R Value Insulation For Attic

6 305 btu hour 0 53 ton r 4 2 duct insulation.

Highest r value insulation for attic.

Spray foam offers the best attic insulation performance available. Where you live different climates require different insulation r values. Recommended home insulation r values. The higher the r value the greater the performance of the insulation.

The duct insulation r values i mentioned above are what s on the product label. 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. 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. Recycled glass or sand that s melted and spun into fibers.

You can achieve better thermal performance in your attic by adding an additional layer of insulation. They sport insulation values of approximately r 6 5 and r 3 6 per inch respectively. Your home s age if your home is more than 10 year old you likely need more insulation. How often do you think you get the full labeled r value.

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

Closed cell and open cell aka 2 pound and pound respectively. The r value for loose fill attic insulation is 3 3 inch thickness and is laid between the attic joists. Some other factors to consider. There are many ways to retrofit a home with fiberglass and.

Insulation level are specified by r value. 7 948 btu hour 0 66 ton the numbers are even higher for the additional heating load. In particularly cold climates you might go up to r 60. R value is a measure of insulation s ability to resist heat traveling through it.

The table below shows what levels of insulation are cost effective for different climates and. Your home s r value score will guide you toward the type of insulation you need. Just how much you need for your residential or commercial building depends on a number of factors such as your heating system and location. The higher the r value the better the thermal performance of the insulation.