GLOSSARY
34
FORCE
/3 3.0 & 4.0 DP
A Glossary
R-VALUE:
The resistance (R) to heat or cold. The higher the R-
Value, the greater the resistance and the better the insulation factor.
SETTLEMENT:
Insulation will settle after being blown. The
FORCE/3 blows near settled density. Consult the chart on the
material bag for coverage and install accordingly.
COVERAGE:
Every bag of material comes with a coverage chart
detailing R Value ratings. Average ratings for various materials are:
Cellulose: R = 3.7 per inch
Rockwool: R = 2.6 per inch
Fiberglass: R = 2.2 per inch
CFM:
Blowers are measured by Cubic Feet per Minute. A low
CFM blower reduces “dust” when blowing insulation into an attic.
The FORCE/3 features the lowest CFM of all insulation blowing
machines, minimizing the “dust”.
PSI:
Blowers are also rated by Pounds of force per Square Inch.
A high PSI does a better job of blowing insulation, the The F/3 3.0
produce 3.0 PSI while the F/3 4.0 DP produces a PSI of 4.0.
BRIDGING:
A pocket of air, or void, created by improper
agitation in the hopper. A “bridge” can stop production until
cleared. The FORCE/3 is designed with a non-bridging hopper.
However, you may experience a temporary bridge while using your
machine. Waiting a few seconds will most likely clear a temporary
bridge. If not, unplug your machine and redistribute the material in
the hopper.
VENTILATION:
Proper airflow requires one square foot of air
movement for every 150 square feet of attic area.
GLOSSARY
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