Loose fill insulation is a viable alternative to batts and rolls in difficult access areas such as truss attics or closed wall cavities (retrofit). It is also widely used in conventional attics as a matter of builder or homeowner preference.

The installation process for loose fill insulation is more complex than for batts or rolls because a blowing machine is required for installing loose fill. This dictates that workers be carefully trained to install loose fill products in strict accordance with manufacturer coverage charts.