Texas Windstorm Certification: WPI-8 and WPI-8-E

A coastal homeowner hires a roofer after a storm and assumes the new roof automatically preserves eligibility for windstorm insurance. The contractor finishes the work, but nobody arranged a windstorm inspection. The owner later learns the property needs a certificate of compliance. The Texas WPI-8 process is designed to document that covered construction in designated areas meets applicable windstorm building-code requirements. It can affect whether property qualifies for wind and hail coverage through the Texas Windstorm Insurance Association (TWIA), so certification planning belongs in the project schedule.

TDI’s Windstorm Inspection Program currently issues two main certificates: WPI-8 for new and ongoing improvements, and WPI-8-E for completed improvements. TWIA issued WPI-8-C certificates for some completed work from 2017 through May 2020, but the current process is administered by TDI. The certificate is not an insurance policy, proof that all risks are covered, or a warranty that the structure will withstand every storm. It is a compliance record for specified construction in the program area.

Where the windstorm certification program applies

TDI says its Windstorm Inspection Program applies to designated catastrophe areas along the Texas coast: the first-tier counties and specified communities east of State Highway 146 in Harris County. The program includes Aransas, Brazoria, Calhoun, Cameron, Chambers, Galveston, Jefferson, Kenedy, Kleberg, Matagorda, Nueces, Refugio, San Patricio, Willacy, and designated parts of Harris County. The current official map and TDI instructions control; do not infer that every Gulf Coast address or an entire county is treated identically.

Certification is most relevant when an owner seeks TWIA wind and hail coverage for property in its designated area. TWIA eligibility has other conditions, including location, insurance-market eligibility, underwriting condition, and sometimes flood coverage. A certificate addresses construction compliance for the work shown; it does not by itself satisfy every eligibility condition, guarantee a TWIA offer, set the policy limit, or insure flood damage. A private insurer may also rely on certification records, but requirements vary. Confirm with the agent and TDI which certificate is required for the specific property and project.

What kinds of work may need an inspection

TDI identifies new construction, additions, alterations, repairs, and reroofing among the types of improvements that can require inspection and certification. The purpose is to confirm that the parts of the building affected by the work meet the applicable windstorm code. A roof replacement can involve roof covering, deck, attachment, flashing, and windborne-debris protection. A major opening replacement may affect the building envelope and require product approvals or inspections. The specific project and current rules determine the required stage and documentation.

Not every repair requires a WPI-8. TDI lists examples that may not need an inspection, including small roof repairs under a stated area threshold that do not involve the decking, painting, carpeting, cabinets, fences, gutters, decorative shutters, steps, screen doors, plumbing or electrical repairs, and replacement of glass in windows or doors. These examples are guidance, not permission to skip an inspection when the project is larger or affects structural components. Contact the local TDI windstorm office before work starts if the project’s classification is uncertain.

A contractor’s scope can evolve after demolition begins. A small patch may uncover damaged decking, framing, or attachment problems that turn it into a larger repair. Owners should discuss inspection needs before signing the job and make a plan for unexpected work. If the construction requires a certificate, inspection must occur at the appropriate stage; concealing the work before an inspector sees it can make compliance harder to document. The owner and contractor should maintain plans, permits, product records, photographs, and inspection communications.

WPI-8 for new or ongoing construction

For a project that has not begun or is still underway, TDI says the owner or builder should notify the department before construction starts, generally by submitting Form WPI-1, the application for a certificate of compliance. TDI or an appointed Texas-licensed professional engineer can inspect phases of the work. The party arranging the inspection should contact the local office when a new inspection stage is ready. After required inspections and paperwork are approved, TDI issues the WPI-8 certificate.

Inspections are timed to visible construction components. Depending on the project, an inspector may need to see foundation anchorage, framing, roof decking, attachment, sheathing, opening protection, or other features before they are covered. The applicable inspection list depends on the building type, code, work, and approved plan. A contractor should coordinate the schedule so that work does not cover a required component before inspection. If the owner uses an appointed professional engineer, the engineer must submit the applicable inspection verification and supporting material to TDI.

A WPI-8 certificate refers to the approved work in the application. It should not be treated as a blanket certificate for every future renovation at the address. Later additions or substantial repairs may need a new application and inspection. Keep the certificate, application number, construction date, plans, product approvals, permits, and contractor records in the property file. TDI’s public system allows a certificate to be searched by address or application number. The records can help a later owner, agent, or insurer confirm what was certified.

WPI-8-E for completed construction

If work has already been completed without the required ongoing inspection, TDI provides a completed-construction process for WPI-8-E. This is not simply a form request or a retroactive affidavit. A Texas-licensed professional engineer must inspect the completed work and prepare a sealed report with supporting evidence, or a sealed design package may be required under the current process. TDI’s completed-construction instructions identify a signed WPI-2E application and a sealed post-construction inspection report and supporting documentation among the submission requirements.

Post-construction certification can be more difficult because important components are hidden behind finished materials. The engineer may need to evaluate plans, calculations, photographs, product identification, permits, invoices, installation details, or testing. If records are missing or a component cannot be verified, more invasive inspection or corrective work may be needed; the result is not guaranteed. TDI’s public guidance cautions that completed inspections can cost more. Contact a qualified engineer and review the current submission checklist before assuming the existing work can be certified.

The WPI-8-E process is for completed construction; WPI-8 is the route for new or ongoing construction. Owners should not deliberately wait until a project is finished to start the certification process when a WPI-8 inspection is available. The distinction matters because inspection access and supporting proof differ. A post-construction engineer’s report does not necessarily solve a missing product approval or code issue. TDI may require additional documents to establish compliance, and the applicable building code depends on the project date and current program rules.

Building code, product approval, and effective dates

Windstorm certification evaluates compliance with the building standards applicable to the project and designated location. TDI’s current adopted-codes page states that applications for WPI-1 certificates from April 1, 2026 must be certified under the 2024 International Residential Code or 2024 International Building Code. The wind speed and windborne-debris requirements are location-specific. A product that works in one exposure or installation may not satisfy another. Use TDI’s current code and product-evaluation resources rather than relying on an older contractor handout.

Building products can be subject to approved product evaluations, manufacturer installation instructions, and project-specific design requirements. A certificate does not mean every product in a home is certified for every application. Save labels, packaging, invoices, model numbers, testing reports, and photos of installation where practical. If the project uses a window, door, roof covering, or shutter system, ask whether the product evaluation and installation method align with the building’s wind speed, opening size, and debris-protection requirements.

The code basis may depend on when construction began or which application is submitted. Renovations and repairs can have their own transition rules. TDI’s page is updated as standards change, so a source that accurately described the 2018 or 2021 code may no longer apply to a new 2026 project. For the exam, focus on the role of the certificate and the difference between ongoing and completed construction. For a real project, confirm current code requirements with TDI, the inspector, and the local building official.

How certification connects to windstorm insurance

A WPI-8 or WPI-8-E can establish a building’s compliance status for the work listed and support TWIA eligibility. TDI says most coastal homes and properties need a certificate verifying compliance to buy TWIA wind and hail coverage, subject to statutory exceptions and current program requirements. The certificate is one input; it does not replace the application, proof that private coverage was declined where required, property condition review, premium payment, or TWIA approval. A homeowner should provide the certificate number to the agent and confirm that it appears in the official system.

If a property has an existing certificate, verify that it belongs to the correct street address and construction project. A prior certificate for a roof does not necessarily certify a later addition; a certificate for a detached garage may not cover the dwelling; and a document with a similar address may belong to a neighboring lot. TDI’s search tool can show a certificate and application status. Keep the official record and confirm discrepancies with TDI before a policy application or renewal depends on it.

Certification and insurance coverage are separate. A WPI-8 does not promise a claim will be paid, establish replacement cost, extend a policy deadline, or cover wind damage to a component that is excluded. The TWIA policy and declarations identify covered property, limits, deductibles, and claim procedures. Similarly, a certificate is not a substitute for homeowners insurance, flood insurance, liability coverage, or maintenance. It addresses code compliance for specified construction, while insurance transfers defined financial risks.

Planning a roof replacement or repair

1. Check whether the property lies in the designated windstorm area using TDI’s official map and address tools.
2. Search the TDI system for existing WPI-8 or WPI-8-E certificates and confirm the correct address and work scope.
3. Before construction, ask TDI or an eligible inspector whether the proposed work requires inspection and which application applies.
4. Ask the contractor who will submit the WPI-1, schedule inspections, preserve product records, and provide the final certificate.
5. Use products and installation methods that meet the current code and applicable product evaluation; keep labels and invoices.
6. Do not cover inspection-stage components until required inspections are complete.
7. If work is already complete, review TDI’s WPI-8-E checklist with an eligible Texas-licensed professional engineer.
8. Retain the final certificate with the property records and send it to the insurance agent when applying or renewing TWIA coverage.

TDI advises homeowners to discuss inspection requirements with contractors before work and not make final payment until the project is complete and a required certificate has been issued. A written contract can identify who is responsible for arranging inspection and what happens if the work fails. The homeowner should verify the certificate independently rather than rely only on a contractor’s statement. If a storm repair is urgent, protect the structure from further damage while coordinating with TDI and the insurer about documentation and inspection access.

Examples

Example one: a coastal homeowner replaces an entire roof and submits a WPI-1 before work begins. The inspector checks required stages while decking and attachments are visible. After final approval and paperwork, TDI issues a WPI-8. The owner keeps the certificate and provides it to the agent. Example two: the same roof is fully covered before the owner contacts TDI. A Texas-licensed professional engineer may need to conduct a post-construction inspection for a WPI-8-E. The owner may need sealed documentation, and the certificate is not guaranteed if compliance cannot be shown.

Example three: a homeowner replaces a small area of shingles without touching the deck. TDI guidance lists limited roof repairs under 100 square feet that do not involve decking as an example that may not require inspection. The owner should confirm the current rule with TDI because the actual scope could change. Example four: an owner buys a property with an existing WPI-8 and later builds an addition. The older certificate does not necessarily certify the new addition; a separate application and inspections may be required.

Example five: a contractor installs a product that lacks the required evaluation or uses the wrong attachment pattern. An inspection can identify noncompliance; the owner may need corrective work or additional proof. A certificate is not automatic merely because a licensed contractor performed the work. Example six: a home has a WPI-8 certificate but TWIA declines it for another underwriting or eligibility reason. The certificate proves a construction fact; it does not compel the insurer to issue a policy.

Common exam traps

• Confusing WPI-8 for ongoing construction with WPI-8-E for completed construction.
• Assuming TWIA issues new compliance certificates; TDI has issued current certificates since June 2020.
• Assuming every repair needs an inspection or that no roof repair needs one.
• Treating a WPI-8 as an insurance policy, claim guarantee, or proof that every TWIA eligibility condition is met.
• Assuming a certificate for one project covers a later addition or every structure at the address.
• Forgetting that post-construction inspection may require sealed engineering reports and supporting evidence.
• Using an outdated building code or inspection checklist for current work.
• Assuming a contractor’s certificate promise means TDI has issued and recorded the certificate.

Prepare for the Texas P&C exam with the Texas Property and Casualty exam prep course. Review the distinction between windstorm certification, TWIA eligibility, and the insurance contract itself.