| 4.1001.5a
Preparation | Lead safety procedures will be followed Cavities will be free of hazards, intact, and able to support
dense pack
Dense pack
The process of installing loose-fill insulation to reduce air flow and perform to a stated R-value
pressures All escape openings will be blocked for material Access will be gained and each cavity will be probed, locating all attic floor joists and blockers Interior will be masked and dust controlled during drilling when accessing from interior, shrouds and containment devices are recommended Electricity supply will be confirmed and will support blowing machine power demand Blowing machine pressure test will be performed with air on full, feed off, agitator running, and gate closed Hose outlet pressure will be at least 80" of water column (
IWC
IWC
Inches of water column
) or 2.9 pounds per square inch (
psi
Psi
Pounds per square inch
) for cellulose insulation; for other types of
dense pack
Dense pack
The process of installing loose-fill insulation to reduce air flow and perform to a stated R-value
insulation, check manufacturer specifications for blowing machine set up | Prevent damage to house Provide thorough access to allow 100% coverage Use proper equipment and process to achieve consistent density, prevent settling, and retard air flow through cavities |
