Compression-based seals, typically made of flexible materials like foam, rubber, or silicone, are used to block air leaks around doors, windows, and other openings. These pliable barriers conform to irregular surfaces, creating a tight seal against drafts, moisture, and pests. For example, a foam tape applied to the frame of a window sash prevents outside air infiltration.
Effective sealing significantly improves energy efficiency by reducing the load on heating and cooling systems. This, in turn, lowers energy consumption and associated costs. Furthermore, these seals enhance indoor comfort by eliminating drafts and minimizing noise transmission. Historically, simpler materials like felt or cloth were employed, but advancements in material science have led to more durable and effective solutions.