The Vinyl Siding Institute (VSI) is the trade association for manufacturers of vinyl and other polymeric siding and suppliers to the industry.

The purpose of VSI is to further the development and growth of the vinyl siding industry by:

• Maintain and expand markets for vinyl and polymeric siding.
• Address regulatory issues, including material restrictions, monitoring of building codes and the education of building code developers and regulators.
• Help develop material, product and performance standards by working through standards-making organizations and code bodies.
• Sponsor certification programs that improve the quality of siding and its installation.
• Provide a forum for issues of interest to the vinyl siding industry.
• Use VSI resources to share information with the industry and its customers on the benefits of vinyl and other polymeric siding.
• Engage in product stewardship and outreach activities to enhance the image of the industry and its products.

If you are a VSI member, use the button at the top of the navigation bar to log in.