4.1001.5 Dense Pack Preparation

Topic: 
Attics
Subtopic: 
General Preparation
Desired Outcome: 
Proper material density achieved safely and cleanly
TitleSpecification(s)Objective(s)
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