Which type of air barrier products help improve energy efficiency in homes?

House wraps are specifically designed to act as air barriers in building construction, significantly improving energy efficiency in homes. These materials are typically installed on the exterior of a structure, under the siding, and play a crucial role in controlling airflow and moisture. By preventing air leaks, house wraps help to maintain the desired indoor temperature, reducing the reliance on heating and cooling systems. This results in lower energy consumption and costs, contributing to overall energy efficiency.

In contrast, while insulated siding, fiberglass insulation, and roofing materials also influence energy efficiency, they do so in different capacities. Insulated siding provides thermal insulation and can reduce heat loss, but it doesn't specifically function as an air barrier. Fiberglass insulation controls heat transfer within walls, ceilings, and floors, but again, it does not provide a continuous air barrier unless it is properly installed in conjunction with air sealing methods. Roofing materials primarily protect against environmental elements and may have some insulating properties, but they do not typically serve as air barriers in the same way that house wraps do.