A seal affixed to the meeting edges of a pair of entryways prevents air infiltration, light, and sound transmission. These seals are typically made of flexible materials like rubber, silicone, felt, or foam, designed to compress when the doors close, creating a barrier. For example, a common type utilizes a flexible vinyl bulb that presses against the gap between the doors.
Effective sealing enhances energy efficiency by minimizing drafts, reducing heating and cooling costs. It also improves sound insulation, creating quieter interior spaces. Furthermore, such seals prevent the entry of dust, insects, and moisture, contributing to a cleaner and more comfortable environment. Historically, simpler methods like felt or fabric strips were used, but modern materials and designs offer superior performance and durability.
