The flipper weather seal is a type of weatherstripping commonly used in aluminum door and window frames. It’s designed to provide a seal between the sash (movable part of the window or door) and the frame when the window or door is closed. Here’s how it works:

1. Function: The flipper weather seal consists of a flexible strip, typically made of rubber or silicone, that is attached to the edge of the sash or frame. When the window or door is closed, the flipper seal compresses against the opposing surface, creating a tight seal that prevents air, water, dust, and noise from entering the interior space.

2. Design: The flipper seal is named for its design, which allows it to “flip” or flex easily when the window or door is opened or closed. This flexibility ensures a secure seal while still allowing for smooth operation of the window or door.

3. Installation: Flipper weather seals are often installed in a groove or track along the edge of the sash or frame, ensuring a secure fit. They may be attached using adhesive backing or held in place by the surrounding structure.

4. Durability: Flipper weather seals are typically made from durable materials that are resistant to weathering, UV exposure, and temperature fluctuations. This ensures that the seal maintains its effectiveness over time, providing long-lasting protection against the elements.

5. Energy Efficiency: By sealing gaps and preventing air leakage, flipper weather seals contribute to the energy efficiency of doors and windows. They help to minimize heat loss in the winter and heat gain in the summer, reducing the need for heating and cooling and lowering energy costs.

Overall, flipper weather seals are essential components of aluminum doors and windows, providing effective weatherproofing, energy efficiency, and comfort benefits for building occupants.