
Deliver an entry that performs as exceptionally as it looks. Build your knowledge, skills and confidence with the Therma-Tru Certified Door System Installer Training Program.
Learn from the professionals at Therma-Tru – the expert in fiberglass door systems – and OSI® – the expert in construction sealants – as they take you through a door system installation every step of the way.

Expert guidance. Professional results.
The Therma-Tru Certified Door System Installer Training Program walks you through the proper techniques to correctly install and seal a Therma-Tru door system. One that helps provide weather resistance, energy efficiency and smooth operation for years to come, helping to reduce callbacks while increasing customer satisfaction.
Included in the program:
- Step-by-step videos with expert guidance.
- Job aids and supplemental video content for quick on-site reference.
- Certified Door System Installer status.
- Certified Door System Installer certificate and card.
Want more information? Download a Therma-Tru Certified Door System Installer Training Program flyer.

Already Certified?
Add your business to our Certified Installer Locator. Therma-Tru dealers can also add the Certified Installer seal to their business information on our existing Dealer Locator.