For skilled siding installers, becoming a VSI Certified Installer is easy – simply follow VSI’s Career Pathway to Success Program, take an online class, or a class taught by a VSI Certified Trainer and pass an exam that tests your knowledge about vinyl siding installation. Classes are offered across North America. If a classroom is not convenient, we offer online certification classes in multiple languages. Go at your own pace, all at once or one chapter at a time – whenever and wherever you want.