Windstorm Certifications (TDI, WPI-8, City Compliance)
In regions prone to high winds and hurricanes—particularly along the Texas Gulf Coast—structures must be built to withstand extreme weather conditions. At Norex Engineering, we provide comprehensive inspections and documentation for Windstorm Certifications in accordance with the Texas Department of Insurance (TDI) WPI-8 program as well as applicable local city ordinances.
Our licensed engineers and inspectors verify that new construction, additions, repairs, or re-roofs comply with TDI windstorm design standards and meet required structural and fastening details. We work closely with builders, homeowners, and roofing contractors to conduct inspections at the appropriate construction phases—ensuring compliance before components are concealed or inaccessible.
Our windstorm certification services include:
Site-specific wind zone analysis
Inspection of framing, sheathing, and connections
Roof covering compliance (shingles, metal, tile, etc.)
Verification of fasteners, anchors, and uplift resistance
Coordination with the Texas Windstorm Insurance Association (TWIA)
Issuance of WPI-8 certificates and city compliance letters
Whether you’re building a new home or replacing a roof, having proper windstorm certification is essential for insurability and peace of mind. Norex Engineering ensures your project is documented, inspected, and approved to meet all required standards.