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What is a Wind Zone for mobile homes?
Wednesday, January 15, 2020
Wind zone designations were created for mobile homes by HUD in 1976 to specify two design categories of wind resistance: one for homes that are inland and not likely to get hurricane-force winds (Zone 1), and another for Florida and coastal areas of other states that are prone to hurricances (Zone 2). The Zone 2 homes are designed to withstand 100 mph winds.
After the total destruction of so many mobile homes in South Florida during Hurricane Andrew in 1992, HUD decided in 1994 to create a Zone 3 for areas in Florida and other states—but primarily South Florida—that are subject to more severe hurricane winds. Zone 3 is rated for 110 mph winds.
There was also an additional special category created in 1994 for homes within 1500 feet of the coastline in Zones 2 and 3, called a “D-sticker” or “Exposure D.” It is essentially a Wind Zone III home on steroids, strengthened to meet the wind resistance requirement of ASCE 7-88, Exposure D, which is a standard referenced in the HUD Code.
Why The Wind Zone Is Important
The wind zone rating is significant because you cannot move a home into a wind zone area that is higher than its rating, except for a limited “hardship” exemption which you can learn about at our article Can you move a Wind Zone 2 mobile home to Zone 3 in Florida?
To learn more about wind zones, see our blog post Where are Wind Zone 2 and Wind Zone 3 for mobile homes located?. Also, to find out how to locate the data plate for a manufactured home, which is where the wind zone it was designed for is listed, read our blog post How do I find out how old a mobile home is and who manufactured it?
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