A flange frame window is a type of window designed with an integrated flange, which is a crucial component for installation and weather sealing.
Understanding the Window Flange
Based on common definitions, including the reference provided:
A window flange is the trim or lip that surrounds a window opening on the exterior of a home. It serves both aesthetic and functional purposes.
- Function: It provides a finished look to the window exterior and, critically, helps to keep out water, wind, and debris by creating a seal and directing water away from the wall opening.
- Materials: Flanges can be made from various materials, often matching the window frame material. Common types include wood, vinyl, aluminum, and steel.
How the Flange Relates to the Frame
A "flange frame window" specifically refers to a window where this flange is directly attached to or is an integral part of the window frame's exterior perimeter. This type of flange is commonly referred to as a "nail fin" or "installation flange."
Installation and Benefits
Flange frame windows are widely used, particularly in new construction or full-frame replacement projects where the old window and frame are completely removed down to the rough opening.
- Installation Method: The integrated flange sits flat against the exterior wall sheathing or framing. Installers then use nails or screws through pre-punched holes in the flange to secure the window directly to the building's structure. This method provides a strong mechanical connection.
- Weatherproofing: Once the window is secured via the flange, flashing tape or other weatherproofing materials are applied over the flange and onto the wall. This creates a shingle-like effect that is highly effective at preventing water intrusion around the window opening.
In essence, a flange frame window is a standard window frame equipped with an exterior lip (the flange) that facilitates secure installation and provides a primary barrier against the elements.
