Seals applied to the frames of sliding glass doors minimize drafts, moisture infiltration, and energy loss. These barriers, typically made of materials like rubber, vinyl, felt, or foam, fill gaps between the door panels and the frame, effectively blocking outside elements. For example, a compression seal installed along the vertical edges of a sliding door creates a tight barrier when the door is closed.
Effective perimeter sealing significantly improves energy efficiency by reducing the workload on heating and cooling systems. This translates to lower utility bills and a smaller carbon footprint. Furthermore, such sealing prevents water damage by minimizing the intrusion of rain and moisture, which protects interior finishes and prevents the growth of mold and mildew. Historically, simpler materials like felt were common, but advancements in material science have led to more durable and effective options with improved longevity and performance.