Which type of insulation is most commonly used in residential homes?

Fiberglass insulation is the most commonly used type of insulation in residential homes due to several key factors. First, it has a high R-value, which measures thermal resistance, making it effective at reducing heat loss in winter and heat gain in summer. This contributes to energy efficiency and helps maintain a comfortable indoor temperature.

Additionally, fiberglass insulation is relatively affordable and widely available, making it accessible for most construction and renovation projects. It is manufactured in various forms, including batts (pre-cut panels) and loose-fill, allowing for flexibility in installation depending on the specific needs of a home.

Fiberglass is also non-combustible and provides good sound insulation properties, adding further benefits that homeowners and builders appreciate. Its long-standing use in the industry has also led to a wealth of installation knowledge and resources, making it easier for contractors to work with.

Having these advantages solidifies fiberglass insulation's position as the preferred choice for residential properties, while other options like foam board, spray foam, and cellulose may be used in specific circumstances but do not have the same level of widespread application.