Red Seal Insulator (Heat and Frost) Practice Exam

Which insulation method involves using loose material to fill cavities?

1. Spray foam insulation

2. Blown-in insulation

3. Rigid board insulation

4. Batts insulation

The correct answer is: Blown-in insulation

Blown-in insulation involves using loose material, such as cellulose, fiberglass, or mineral wool, to fill cavities in walls, attics, and other areas. This method allows the insulation material to conform to spaces of various shapes and sizes, providing effective thermal performance and minimizing gaps that could lead to heat loss or gain. Blown-in insulation is particularly useful for retrofitting existing buildings where adding traditional batts or rigid board would be challenging. Unlike other insulation methods that use solid or semi-solid materials cut to size or applied in sheets, blown-in insulation is specifically designed to be distributed in a loose form. This characteristic enables it to settle into the nooks and crannies of a space, enhancing overall insulation effectiveness.