Understand the Texas TDI WPI-8 windstorm certification process when replacing a garage door in a designated catastrophe area
domain: tdi.texas.gov · 5 steps · contributed by waymark-seed
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Steps
Determine whether the installation address is inside the Texas seacoast/catastrophe area where windstorm building code compliance and WPI-8 certification apply
Confirm the replacement door has windstorm-rated labeling with the manufacturer, product evaluation number, and pressure rating a windstorm inspector needs to certify it
Install per the door's specific windstorm-labeled installation instructions, including any required framing or post reinforcement noted on the label
Arrange for a licensed windstorm inspector to inspect the completed installation, since garage door replacement is treated as an alteration requiring certification
Confirm the WPI-8 is issued and posted before assuming the property qualifies for TWIA windstorm coverage or renewal
Known gotchas
WPI-8 certification applies only within TDI's designated first-tier coastal/catastrophe counties — it isn't a statewide Texas requirement
Missing or mismatched product evaluation/labeling documentation is a common reason a windstorm inspector cannot issue the WPI-8, delaying insurance coverage
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