For Manufacturers

If you’re in the polymeric exterior industry, learn how to become a member by clicking the button below.

The Polymeric Exterior Products Association (PEPA) is the leading trade association dedicated to expanding market opportunities for vinyl siding, along with today’s growing range of sustainable and resilient polymeric exterior products.

Become a PEPA Member

Discover the advantages of becoming a member of PEPA. You'll join an organization dedicated to:

  • Championing members' interests at every level of government and industry, including proposed changes to ASTM and other code body standards and legislation to protect the right to choose polymeric exteriors
  • Preparing a larger, more experienced workforce to meet growing demand, through expanded installation training and certification programs
  • Building a thriving community where ideas are shared, partnerships are formed, and collective success is celebrated
  • Fostering and promoting new innovations that push the boundaries of what's possible in beautiful, high-performance and sustainable exterior design
  • Elevating industry sustainability facts through life cycle inventory and environmental product declarations

Certified Products

Only those products that are independently verified to follow stringent quality control standards as well as meeting or exceeding ASTM standards can carry the Certified Vinyl Siding badge.

VSI-Certified products are verified to meet the following ASTM standards:

  • ASTM D3679 for Vinyl Siding
  • ASTM D7793 for Insulated Vinyl Siding
  • ASTM D7254 for Polypropylene Siding

Build consumer trust that your products are designed to perform to the highest product standards in the industry with our product certification program.

VSI Member Portal

Click the link below to access your VSI member portal.

Take a Stand

Sharing our expertise about our industry helps public officials make better decisions about rules and regulations that directly impact the use of vinyl siding. Proactively reach out to and educate our audiences with the correct information. Get started today.

Learn How
VSI member talking to event attendee over studded house model

Stop by and see PEPA at Industry Events throughout the year.

See the list of events we'll be attending.

PEPA Event Calendar