When choosing roof insulation, consider both the R-value and the thickness needed to reduce energy consumption for your climate and home design. Some materials, such as polyisocyanurate (polyiso ...

For example, a 4x8 polyisocyanurate board from Johns ... its overall R-value—and a single inch of foam insulation can increase the R-value of your home by 5. If your home already has an R ...

There are three main types: polyiso, which has the highest ... you can find the recommended R-value for common insulation ...

However, like beadboard, it's a fire hazard. Polyisocyanurate is the third type of foam board. It's made of a closed-cell sheet of foam enveloped in aluminum foils, giving it a high insulation R-value ...

In order to determine which type of insulation is best for your home, it’s important to understand “R-value.” This is the standard by which all types of insulation are judged; the R-value ...

A fully insulated basement subfloor system gives you a better insulation R-value, but is only a good fit when the basement ceiling is at least 8 feet high. An insulated subfloor starts with a ...

Don Magruder writes: "The advent of stone wool insulation is providing a unique value proposition for contractors and ...

If the R value is higher than one, then the number of cases keeps increasing. But if the R number is lower the disease will eventually stop spreading, because not enough new people are being ...