Loose-Fill Insulation

Loose-fill insulation (Figure 3-9) is available in granular, fibrous, or powdered form and is sold in bulk, usually in bags (Table 3-4). It is commonly produced from vermiculite, perlite, glass fiber, cellulose, or rock wool. Because loose-fill insulation is so easy to install, it is often used to insulate the cavities between joists in unfinished attics.

Note

A major disadvantage of loose-fill insulation is that it eventu­ally tends to settle and lose some of its effectiveness as an insulating material.

Note

Vermiculite and perlite loose-fill insulation are seldom used today as an insulating material in residential construction.

Loose-Fill Insulation

Posted in Audel HVAC Fundamentals Volume 1 Heating Systems, Furnaces, and Boilers