Thin, flexible metal strips, typically aluminum, stainless steel, or bronze, are commonly used to seal gaps around door frames. These strips effectively prevent air and water infiltration, closing spaces between the door and its frame when the door is closed. Examples include spring bronze, mounted on a thin wood strip for flexibility, or more rigid aluminum sections designed for sliding glass doors.
Protecting a building’s interior from the elements is paramount for energy efficiency, comfort, and structural integrity. Properly installed barriers against drafts and moisture significantly reduce energy loss, saving on heating and cooling costs. Furthermore, such barriers prevent water damage, which can lead to mold growth and wood rot. Historically, simple felt or fabric strips were used, but the advent of more durable and effective metal options has greatly improved building performance and longevity.