What it does or measures
The short answer
Impact performance applies to the approved assembly, including glazing, frame, anchorage, size, and installation—not to a generic pane label alone.
How to compare it
- Verify the current product approval and tested assembly for the project conditions.
- Review design pressure, debris criteria, dimensions, anchorage, and installation instructions with a qualified professional.
- Confirm current local requirements instead of assuming a citywide rule.
Limitations to keep in view
- Impact-resistant does not mean unbreakable.
- Impact glazing, protective coverings, and storm windows are not automatic synonyms.
- A ZIP or city alone does not establish that a product is required or approved for one property.
Climate and use context
- Relevance depends on verified wind exposure, current jurisdictional rules, property conditions, and homeowner goals.
Sources
Sources
- Wind Retrofit Guide for Residential Buildings — Federal Emergency Management Agency
- Safety Standard for Architectural Glazing Materials — U.S. Consumer Product Safety Commission