The amount of attic insulation required for your home largely depends on your geographic location. Recommended R-values for attic insulation are set by the U.S. Department of Energy. Northern New Jersey and Rockland County, NY, homes are in Zone 4 and 5 of the U.S. Department of Energy’s zoning map. As such, the recommended R-values for attic insulation for homes in New York and New Jersey are between R-49 and R-60.