Why is Cellulose Insulation Better?

There are several key reasons cellulose insulation is a superior product for buildings:
Higher R-per-inch values than most comparable mineral fiber materials;
Reduces air-leakage;
Not as subject to convective heat loss;
Lower cost relative to competing products of similar thermal efficiency;
Made from over 75% recycled material -- environmentally friendly;
Approved by all major code bodies;
Well tested and field proven.

All residential structures contain large amounts of wood. Cellulose insulation is the only wood-based building material that is always treated for fire retardancy . This makes cellulose insulation one of the safest materials used in home construction.
If a fire occurs, the dense structure of cellulose and its fire retardants slow its spread through the building by blocking flames and hot gases and restricting the availability of oxygen in insulated walls and ceilings. Scientists at the National Research Council Canada (NRCC) report that "cellulose in the wall cavity provided an increase in the fire resistance performance of 22% to 55%." Fire roars right through fiber glass. The NRCC study showed that "the fire resistance of an assembly with glass fiber insulation was slightly lower than that of a non-insulated assembly."
Several revealing fire demonstrations have been conducted in which cellulose insulated structures have remained virtually intact while un-insulated and mineral-fiber insulated structures burned to the ground.

Sound Deadening

We can also spray cellulose for sound control. This can be beneficial to separate different rooms. (Bathrooms, Master bedroom or media room) Or for partition walls between businesses such as shown below.