ANAB (ANSI National Accreditation Board) is an independent accreditation organization that evaluates and accredits certification bodies to internationally recognized standards. ANAB accreditation demonstrates that a certification body operates with technical competence, impartiality, and consistency, providing confidence in the integrity and credibility of the certification process.
ICC Evaluation Service (ICC-ES) is an industry leader delivering accredited testing, inspection, and certification for a variety of products, components, methods, and materials. Differentiated by its direct connection to the codes and standards that shape the built environment, ICC-ES goes beyond traditional testing bodies by combining deep regulatory expertise with transparent, science-based evaluations—ensuring products gain immediate trust from code officials, specifiers, and builders. ICC-ES certifications are widely accepted and trusted in North America and internationally for building, plumbing, mechanical, fuel gas, swimming pools, spas, and more.
Concentrated sunlight reflecting off certain surfaces — like energy efficient windows — and onto polymeric siding (vinyl, insulated vinyl, backed vinyl, and polypropylene) can create enough heat to melt the siding surface. While it’s uncommon, it is important to know how to prevent a home’s vinyl siding from melting due to window reflection.
Understanding Concentrated Solar Reflection
Polymeric exteriors encompass a wide range of building materials made from polymeric materials like vinyl, polypropylene and other synthetic materials. This category includes products like vinyl siding, roofing, decking, fencing and a range of other polymeric products used on and around the home.
Polymeric exteriors are chosen for their superior resilience, performance, design versatility and sustainability. They offer a low-maintenance and longer-lasting solution compared to traditional materials. Learn more about the polymeric difference.
Whether you’re an avid DIYer or a certified pro, we have the knowledge you need to install vinyl siding the right way. VSI trains and certifies professionals on proper vinyl siding installation techniques. Our certification program helps improve end results to minimize issues and callbacks. Find a VSI Certified Installer for your project here.
Vinyl siding has the lowest installed cost of any home exterior cladding material, giving homeowners lasting curb appeal and value from day one. It’s inexpensive to maintain because it never needs painting, caulking or re-pointing like other exterior cladding. Discover VSI Certified Products.
Vinyl siding requires roughly half the installation time compared to other cladding options. Its highly engineered design allows for high-quality installation without the need for expensive and hard-to-find trade professionals.
Vinyl siding is versatile enough to help create any architectural style. Get inspired to create the perfect look with our interactive house designs. Each example profiles the 400+ fade-free colors, finishes, trim and accessories indicative of the style to help you gain an understanding of the unique characteristics of various architectural themes.
The VSI Product Certification Program is an independent, third-party certification Program with multiple ISO/IEC 17065 accredited certification bodies involved who service the Program. Approved products are authorized to utilize the Program’s certification mark. End-users can feel comfortable and confident when specifying or purchasing certified product because the VSI Certification Mark confirms that the product meets industry standards.