Cladding with Confidence

Meet Standards with the VSI Product Certification Program

Vinyl siding has long been the exterior cladding of choice for homeowners, contractors and builders across North America. The VSI Product Certification Program is backed by over two decades of experience, with products tested and validated by an independent ISO/IEC 17065 accredited third-party certification body. As the first and only cladding product certified by an industry-sponsored cladding program, certified products are rigorously tested per program requirements to ensure they deliver the superior protection you need to meet—and exceed—international code standards. Save time, reduce wasted work and deliver peace of mind with VSI Certified Products.

Code Compliance at a Glance

Saves time and helps streamline inspection

Tested and Proven

Resilient siding that stands up to the harshest conditions

Third-party Verified

Validated by an accredited, independent certification body

Meet or Exceed Industry Standards

Limit liabilities and instill confidence in your work with independently tested and verified cladding.

Find VSI Certified Products

 

Easy-to-Identify Compliance

No digging through stacks of paper or binders—save time by identifying code compliance reports with a simple glance. The VSI Product Certification Mark makes the Product Certification Listing and Product Evaluation Report reference numbers easy to see, so you'll know the siding you’re looking at is manufactured and tested to meet code with a quick look.


 

Accessible Reports

Our comprehensive reports are standardized to provide easy access to all code compliance information, with Product Certification Listing (PCL) and Product Evaluation Report (PER) reference numbers clearly identified. That means you get all the vital information you need at your fingertips, whether you’re specifying a job or inspecting a new build. Start searching now.


 

Independent Certification Body

Intertek is an industry-leading Total Quality Assurance provider, with more than 44,000 employees in over 100 countries ensuring the quality and safety of companies' products, processes and systems. They've been involved with the VSI Product Certification Program for two decades, and currently serve as the program's ISO/IEC 17065 accredited independent certification body.


 

Ensuring Code Compliance

The VSI Product Certification Program can help save time during building specification and permitting, as well as help to streamline final inspection by offering Product Certification Listings (PCLs) and Product Evaluation Reports (PERs).

Compliance for standard and specialized applications, including coastal construction, are clearly identified and easy to reference. Eliminate the need to rely on other types of code reports by utilizing the standardized PER and PCL code compliance reports that are available for retrieval at any time.

Certified Vinyl Siding

Complies with the ASTM D3679 product standard


Standards tested:

  • Weatherability, wind load, and impact resistance
  • Expansion and shrinkage
  • Surface distortion
  • Length, width, and thickness
  • Rate of burn
  • Lead

Certified Insulated Vinyl Siding

Complies with the ASTM D7793 product standard


Standards tested:

  • Weatherability, wind load, and impact resistance
  • Expansion and shrinkage
  • Thermal distortion
  • Length, width, and thickness
  • Rate of burn
  • Lead
  • Surface flame spread
  • Compatibility of adhesives
  • Thermal insulation value

Certified Polypropylene Siding

Complies with the ASTM D7254 product standard


Standards tested:

  • Weatherability, wind load, and impact resistance
  • Surface flame spread
  • Film adhesion

Building Code Officials

Access the information you need quickly with our guide to International, Florida and Canada building codes governing the use of polymeric cladding and other polymeric products.

Resources

Frequently Asked Questions

Find the information you need fast about the Vinyl Siding Institute’s work—in advocacy, workforce training and certification, building code resources, sustainability and more—in our Frequently Asked Questions.