What is the purpose of insulation in a building?

The primary purpose of insulation in a building is to reduce the flow of heat. Insulation works by creating a thermal barrier that slows down heat transfer between the interior and exterior of a structure. This means that during hot weather, heat from outside is kept from entering the building, while in cold weather, it helps keep the heat generated inside from escaping. Effective insulation plays a crucial role in maintaining a comfortable indoor temperature, improving energy efficiency, and reducing heating and cooling costs.

While there are other important aspects to a building's performance, such as structural strength, airflow management, and aesthetics, these do not encapsulate the primary function of insulation. Insulation is specifically designed to improve thermal performance, making it a vital component in energy-efficient building designs.