What kind of insulation is commonly used in residential construction?

In residential construction, fiberglass batts and foam board insulation are widely utilized due to their effectiveness, versatility, and ease of installation. Fiberglass batts are commonly placed in walls, ceilings, and floors, providing good thermal resistance while fitting easily into standard framing. Foam board insulation offers higher insulation value per inch compared to other materials, making it suitable for applications where space is limited or higher insulating performance is required, such as in basements or exterior walls.

This combination of insulation types allows builders to address a variety of thermal and moisture control needs, enhancing the overall energy efficiency of homes. Additionally, fiberglass batts are relatively affordable and readily available, while foam board insulation can enhance the thermal envelope and reduce energy loss in critical areas.

Other options, while mentioning valid types of insulation, either focus too narrowly on a single type or do not capture the prevalent materials used in combination in residential projects. This makes the selection of fiberglass batts and foam board insulation the most representative answer for common insulation practices in the industry.