Vinyl Replacement Window Basics
Diagram of window
1. Head
The top part of the window frame, going across from one side to another.
2. Jamb
The vertical portions of the window frame that make up its sides.
3. Frame
The window’s outside edges, or the head, jambs, and sill combined.
4. Glazing
Any glass within the entire construct of the window.
5. Pane
A single piece of glass separated by pieces of the window itself.
6. Sash
Stiles and rails, which surround each pane, combine to form a single sash.
7. Sill
This is the lower equivalent of the head, and protrudes from the wall slightly.
8. Muntin Bar
A muntin bar creates a boundary between individual window panes.
Common Types of Windows
Single-Hung/Double Hung
Sashes slide vertically
- In single-hung units, the bottom sash is the only sash that moves
- Ventilation regulated by widening vertical crack with bottom sash
- Screens possible on exterior / interior
Casement
Hinges are located on one side
- Low air leakage rates – a tighter seal than sliding windows
- Better ventilation – larger area open to outside
- Can catch passing breezes since window protrudes outside into wind
- Screens installed on interior
Awning
Similar to casement windows, but hinges at top
- Also open outward and lower leakage rates
Bay Window
Combination of three or more windows
- Center made of one or more windows parallel with wall
- Outer windows angled back towards wall
Bow Window
Similar to bay window, more actual windows
- Radiate out to form semi-circle
Fixed Frame
Used mainly for adding exterior light to rooms
- Does not open or move
- Provides no ventilation
Skylight
Installed in ceiling
- Parallel to roof
- Some models can open and provide ventilation
- Brings in more sunlight than a traditional wall window
Slider
Similar to single/double hung windows, but turned on their side
- Either one or both sashes will be able to move and slide
- Provides ventilation as opening is widened by sashes