Following the 9/11 attacks in the US, Washington put North Korea on the axis of evil list and has since contended that North Korea's possession of nuclear weapons poses a serious threat to the world. Several times, the US administration proposed bringing North Korea before the UN Security Council to impose economic sanctions. However China, North Korea's main ally and trading partner, indicated that it would likely veto any sanctions on Pyongyang.
The type of insulation you need depends on where it will be installed, what R-values are required and your budget. Where you live also affects which insulation you choose. For example, a home in Arizona will have different minimum R-value requirements than one in Minnesota.
While you canât have too much insulation, older homes often donât have enough. To determine the R-value of the insulation in your attic, you need to know the R-value of the type of insulation in your home and the thickness of the insulation. R-Value of Insulation by Type. Here are the R-values per inch of the most common types of insulation: Fiberglass (blown): 2.2 â 2.9. Fiberglass (batts): 2.9 â 3.8. Cellulose (blown): 3.1 â 3.8. Rock Wool (loose): 2.2 â 3.3. Foam (sprayed): 3.6 â 8.2.