to two inches. Some types of thicker foam board insulation are available, but may need to be special ordered. In short, it’s a great alternative to the common fiberglass batt insulation in most ...

Additionally, foam board installation is susceptible to moisture buildup, so good attic ventilation is a must to prevent mold. The next most common type of attic insulation is fiberglass (also ...

For example, fiberglass insulation is cost-effective but less ... Use fiberglass batts cut to fit snugly between studs. Add rigid foam boards on the backside of the wall to boost R-value and ...