What is the function of gaskets and caulking in energy-efficient buildings?

Gaskets and caulking play a crucial role in maintaining the integrity of a building's thermal envelope by sealing gaps and preventing air leakage. This is essential in energy-efficient buildings, as air leaks can significantly affect heating and cooling efficiency. By effectively sealing joints, seams, and openings in the building envelope, gaskets and caulking help to create a more controlled indoor environment, reducing energy costs and improving overall comfort. In energy-efficient design, minimizing unwanted air infiltration contributes to lower energy consumption and a reduced carbon footprint, making these elements vital for the building's performance and sustainability.

The other options, while relevant to different aspects of construction, do not address the primary function of gaskets and caulking in enhancing energy efficiency. Improving aesthetic appeal is a secondary concern relative to functionality, supporting roof structure addresses structural considerations rather than air sealing, and facilitating moisture accumulation is counterproductive to energy efficiency, as moisture issues can lead to mold and degradation of building materials.