Simple Windstorm

Plain-English reference on windstorm insurance and wind-resistant homes in Texas

What Is IBHS Certification?

IBHS is the Insurance Institute for Business & Home Safety, an insurance-funded building-safety research organization. It writes and maintains the FORTIFIED Home standard and runs a laboratory where full-scale houses are tested under controlled wind. There is no single credential called "IBHS certification": what people usually mean is either a FORTIFIED designation issued to a specific building, or a FORTIFIED credential held by a trained professional.

The research body, not a regulator

IBHS does not write or enforce building code. Code is set and enforced by states, counties, and cities. IBHS publishes a voluntary, beyond-code standard and documents why its requirements exist, including side-by-side full-scale tests of FORTIFIED and common residential construction in which two otherwise identical structures are exposed to the same wind. That testing is the argument behind the standard — it is the reason specific fastener patterns, sealed decks, and opening protections appear in the requirements rather than general advice to "build stronger."

Because it is voluntary, nothing about FORTIFIED is automatic. A home does not acquire a designation by being well built, and a contractor cannot confer one by saying the work met the standard.

Three things that get confused

  • A building designation. FORTIFIED Roof, Silver, and Gold are designations attached to a particular address after verified work. See FORTIFIED Roof vs. Silver vs. Gold for what each level adds, and what a FORTIFIED designation means for the general concept.
  • A professional credential. The program trains and credentials independent evaluators who inspect and document the work, along with contractors and other professionals who learn the standard's details. A credentialed professional is not the same as a designated house.
  • A product approval. Individual products — shingles, shutters, garage doors — are tested and approved by product-evaluation bodies and state programs, not by IBHS designation. A FORTIFIED project specifies product performance and installation; the approvals themselves come from elsewhere.

Who verifies what

The program's structure separates the builder from the verifier. The contractor performs the work; an independent evaluator documents it against the current FORTIFIED technical documents using photographs and compliance forms; the program reviews that submission before a designation is issued. Much of the evidence has to be captured while the roof deck is open, which is why evaluators are typically engaged before work starts rather than after.

Designations also carry a term and have to be renewed, and the technical documents are revised periodically. Both are reasons to work from the program's current published documents rather than a summary — including this one.

In Texas, it is separate from WPI-8

FORTIFIED has no formal role in Texas windstorm inspection. The state's own program is administered by the Texas Department of Insurance, which handles windstorm inspections and the resulting certificates. Eligibility for wind and hail coverage through the state's insurer of last resort runs through that state process, not through IBHS — see the WPI-8 certificate of compliance.

The two can coexist on one house. They answer different questions: WPI-8 documents compliance with the state's windstorm building requirements for insurance eligibility; a FORTIFIED designation documents voluntary compliance with a beyond-code standard. Whether a given insurer recognizes either one, and how, is a question for that insurer.

Where to look next

Start with the program's technical documents for the requirements themselves, and with the IBHS demonstration pages if you want the reasoning behind them. For how the designation process runs in practice, see how a FORTIFIED roof designation is issued.

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