Specifications include, but are not limited to: 1. Use blower machine to add up to a R38 value (or R30 value if Weatherization Assistant justified) in attics using the manufacturer’s bag estimation method. The number of bags used must be included on the invoice submitted to the agency. Attics must contain depth makers, junction box flags, wind baffles, and an MSDS for the product; 2. Use insulation blower machine to add fiberglass insulation to the roof cavities of mobile homes. Roof cavities with bowstring, flat, or cathedral styles shall be filled with insulation to capacity. Any access holes created must be sealed in accordance to the NC Weatherization Installation Standards; 3. Install opaque, 6 millimeter polyethylene vapor barriers in crawl spaces of site built of modular homes. The seams of each piece must be overlapped 12 inches. The vapor barrier must extend 6 inches up the foundation wall, mechanically fastened; 4. Use insulation blower machine (rated at to output at least 2.9 pound per square inch) that is capable to dense pack sidewall insulation to a minimum density of 3.5 pounds per cubic foot of volume.