Sold under many names
Wind-borne debris region
Coastal areas with high design wind speeds — in NC, roughly 130 mph and up — where code requires glazed openings to resist flying debris, either with impact-rated (laminated) glass or approved shutters.
What it means for you
If your address is in one of these coastal counties, impact/laminated glazing isn't an upsell, it's code — a legitimate, non-negotiable cost driver. Inland NC homes don't need it. Confirm your specific county and wind line before accepting or rejecting the upgrade.
Where you'll see it
On coastal quotes and permits; drives the impact-glass requirement.
Also sold as: windborne debris zone
Related terms
Defined by Marc Hanley
Verified against NC Residential Code / ICC 600
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