While R-value is an important measurement of an insulation's ability to resist heat transfer, it does not tell the whole story. Other factors like air sealing and resistance to mold/mildew growth are also important. Spray foam insulation has a higher R-value than common alternatives like fiberglass or rigid foam boards. It also acts as an air barrier and moisture barrier to reduce energy costs and create a healthier home. When choosing insulation for homes in Oklahoma, homeowners should consider R-value alongside other benefits like those provided by spray foam.