How to Compare Blown-in Insulations

Blown-in insulation is commonly used in new construction.

Blown-in insulation is commonly used in remodels and new constructions, as it is easy to install and provides superior energy efficiency. The insulation is actually blown in to a home's walls and attic to seal even the smallest cracks and crevices. There are several ways to compare blown-in insulation.

Fiberglass

Fiberglass blown-in insulation is often used in attics, walls and tight spaces. Fiberglass is extremely effective because the fiberglass fibers prevent air movement.

Rock/Slag Wool

Rock wool, often called slag wool, is similar to blown-in fiberglass insulation, as it is made primarily from blast furnace slag (one of the byproducts of molten metal). Rock wool is a good choice for tight spaces or irregularly shaped areas.

Cellulose

Cellulose is a common type of blown-in insulation that is made from newspapers. This type of insulation is treated with fire retardants and may settle over time. In addition, the amount of cellulose insulation installed must be monitored, as it is heavier than other types of blown-in insulation and may cause drywall to sag.

References

• Energy Refuge: Five Reasons to Choose Blown-in Insulation
• Simply Insulate: Insulation Product Types

Resources

• Bob Vila: Blown and Sprayed Insulation