A Window Can Provide Light Without Providing Emergency Escape
This matters when a basement room is being used as a bedroom.
An egress window is designed to provide an emergency opening that can be used without:
- Special tools
- Complicated disassembly
Why Window Style Matters
A window’s outside dimensions do not tell you the usable opening.
Different styles create different clear openings.
For example:
- Sliders
- Casements
- Hopper windows
can have very different usable escape areas even when the rough opening is similar.
What About a Window Well?
If the window opens into a below-grade well, the well also needs to allow the window to function and provide usable escape space.
Don’t Rely on Old Internet Dimensions
Ontario’s Building Code is updated.
Requirements can also depend on:
- Building configuration
- Renovation scope
- Bedroom location
Use the current applicable code and local permit guidance for the project.
Why Plan the Window Before Finishing the Basement?
Changing the opening later can involve:
- Concrete cutting
- Structural work
- New window well
- Drainage changes
Choose the Required Opening Before Designing the Finished Bedroom Around It.
Envirotech Exteriors can help homeowners review replacement-window options while code compliance and structural changes are confirmed with the appropriate project professionals.