Red Seal Insulator (Heat and Frost) Practice Exam

What type of insulation is typically used for basement walls?

1. Fiberglass batts

2. Cellulose insulation

3. Rigid foam board or spray foam for moisture resistance

4. Mineral wool batts

The correct answer is: Rigid foam board or spray foam for moisture resistance

The correct choice for insulation typically used for basement walls is the use of rigid foam board or spray foam for moisture resistance. Basements are prone to moisture issues and potential water infiltration, making it essential to select insulation materials that help control humidity and resist water. Rigid foam board provides a high insulation value and creates a moisture barrier that can protect against water vapor, while spray foam expands to fill gaps and cracks, further enhancing its moisture-resistant properties. Furthermore, both rigid foam board and spray foam are excellent choices for energy efficiency, contributing to lower heating and cooling costs in the home. The ability of these materials to provide continuous insulation without thermal bridges is also significant in basement applications, where maintaining a consistent temperature is critical for comfort and durability of the structure.