Window Types
Residential Windows
Single-Hung: These classic windows have a single operable sash that slides vertically upwards.
Double-Hung: Both sashes (top and bottom) can slide vertically, allowing for ventilation from both directions.
Casement: These windows swing outward on hinges, often sideways or upwards.
Awning: These windows swing outward at the top, allowing for ventilation while keeping rain out.
Slider: These horizontal windows slide open to the side.
Bay/Bow: These windows project outward from the wall, creating a seating area or adding depth to a room.
Fixed: These windows are non-operable and provide a clear view.
Specialty Windows: This category includes skylights, roof windows, and other unique window designs.
Commercial Windows
Storefront Windows: Large, plate-glass windows typically used in retail settings.
Curtain Wall: A continuous glass wall system used in modern buildings, often featuring aluminum framing.
Projecting Windows: These windows project outward from the wall, similar to residential casement windows, but often larger in size.
Louver Windows: These windows feature horizontal slats that can be adjusted to control airflow and light.
Specialty Windows: This category includes skylights, roof windows, and other unique window designs.
Window Components
Frame: The structural support of the window, typically made of wood, vinyl, aluminum, or fiberglass.
Sash: The movable part of the window that holds the glass.
Glass: The transparent material that allows light to pass through. Types include single-pane, double-pane (insulated glass), and triple-pane.
Glazing: The process of installing glass into the window frame.
Hardware: Includes hinges, locks, handles, and other mechanisms that allow the window to operate.
Weatherstripping: Seals the window to prevent air and water infiltration.
Window Energy Efficiency
Energy-efficient windows: Feature features like low-emissivity (low-E) coatings, argon or krypton gas fills, and multiple panes of glass to improve insulation.
R-value: Measures the resistance of a material to heat flow. Higher R-values indicate better insulation.
U-factor: Measures the rate of heat transfer through a window. Lower U-factors indicate better insulation.