How‑To
How to Count Window Panes for an Accurate Quote
Serv1sland Team
September 24, 2025
4 min read
What is a “pane”?
A pane is any individual piece of glass separated by a frame or divider. A typical double‑hung or slider has two panes (top + bottom / left + right).
Common Examples
- Single fixed window = 1 pane
- Double‑hung/slider = 2 panes
- Two side‑by‑side fixed = 2 panes
- Bay/Bow with 3 sections = 3 panes (count each section)
- Patio door (typical) = 2 panes
- French grids (true divided) = count each small pane
What to Include
- Exterior glass and interior glass you want cleaned.
- Transoms and sidelights by doors.
- Skylights (each counts as 1).
What not to include
- Mirrors or interior glass partitions unless you want them cleaned.
- Garage door windows unless desired.
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