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Windstorm System Information

Windstorm System Informational Webinar

Appointed engineers, want to learn more about how to maximize use of your personal log-in? Register yourself and your office staff for a webinar. The webinar will:

  • Include real world demonstrations,
  • provide helpful hints, and
  • answer any of your system related questions.

To register, please contact us by email at Webinars will last approximately one hour.

User Guide

The Windstorm System is an easy and convenient option to find a windstorm inspector, apply for a certificate of compliance, find and print your certificate, and engineers can become an inspector. View the user guide for common practices and procedures.


  • Apply for a certificate: Complete and submit your application (WPI-1) online. For information required to complete your application, please see our checklist.
  • Become an Inspector: Complete the necessary application forms for appointment. For more information required to complete your application, please see our checklist.

Frequently Asked Questions

1. Apply for a certificate (WPI-1)

  • When should I submit an application?
    Please submit the application prior to beginning any construction.
  • What information do I need to submit an application?
    For a list of the information required to submit an application please see our checklist.
  • When do I hire an inspector?
    TDI recommends that you hire an inspector before submitting an application. For a list of currently appointed engineers please see the windstorm system. To view a list of the TDI windstorm field offices, please see our contact information page. If the work is completed, contact TWIA to discuss how to get a completed construction certificatification (WPI-8-C) at 1-800-788-8247.
  • When should I choose the standardized address?
    It is important that we record and certify physical address only. Many times the standardized address will match the physical address, and in those cases, please select the standardized address option. However, the physical address and standardized address do not always match. If you have documented evidence that the physical address is different than the standardized, please keep the physical address and submit all supporting documentation to TDI.
  • Do I need to submit the application I entered online to TDI?
    No, if you entered the application through the windstorm system you do not need to submit the paper application to TDI.
  • Should I submit a separate application for each type of inspection that I perform?
    No, to certify a new structure, just select "new" for the inspection type. You will not need to certify each individual step (foundation, framing, roof) separately. For individual inspections on an existing structure (such as reroof, alterations, or additions) you can list up to three on a single application.

2. Search for a certificate (WPI-8)

  • Where can I go to search for a certificate online?
    To search for a certificate please visit the windstorm system and click on the icon labeled "Find a Certificate."
  • Do I need to use wild cards when entering an address to search for a certificate?
    No, in our new windstorm system there is no need to use wild cards. You can enter just the first few letters or numbers and the system will search for them without a wild card.
  • Can I still find a certificate even if I don't know the entire address?
    Yes, you can search using the application or certificate number. You can also search using a partial address by entering the street address and only one of the following, city, zip code, or county.

3. Become an inspector (Form AQI-1)

  • Do I need to mail in my completed form AQI-1 that I submitted online?
    Yes, because you must sign the form, TDI must receive it before you can become appointed. For more information amount the appointment process please visit our appointment page. Remember: you must attend the orientation webinar before submitting your AQI-1.
  • What information do I need to become an appointed inspector?
    You can find a complete list of all the information required on our checklist for becoming an appointed inspector.
  • Where do I find future orientation webinar dates? How do I register to attend and log in?
    You can check the dates of future oreintation webinars and register to attend on the windstorm system under "Inspector Orientation." Once you are registered, you will get log in instructions by email.

4. General system information

  • What web browsers work best with the windstorm system?
    We don't currently have a complete list however, FireFox, Google Chrome, and the current version of Internet Explorer seem to be most compatible. Your zoom should be set at 100 percent for optimal performance.
  • Can anyone request a log-on to the system?
    Although anyone can use the system to locate, view, and print WPI-8s (Certificates of Compliance), only appointed qualified inspectors, their staff, and TDI employees are currently eligible for a log in.
  • I am an appointed qualified inspector, but my log in expired. How can I reset it?
    You can click the "Did you forget your password" on the log in screen to reset your password. if you haven't set that up through your profile, you'll need to contact a system administer at TDI. Please email, or call us at 512-676-6750.

For more information, contact:

Last updated: 7/5/2018