What to know
- A bay is typically three units at angles; a bow is four or more in a curve.
- Head support and a small roof are not optional — budget carpentry, not just glass.
- Ask who flashing and the bay roof is warranted by.
More than three windows
A bay uses three units at angles; a bow uses four or more in a gentle curve. Both project from the wall, so they need head support, a small roof, and careful flashing. Installation is framing and roofing as much as glazing, which is why the price is a project, not a per-sash number.
Ready for numbers on your opening?
The estimator uses your province, window count and style to produce a range and match local companies.