Welcome to the VSI Product Certification Program's Official List of Certified Products and Colors.
This list is updated when changes occur to provide the most complete and current listing of products that have been certified to meet or exceed ASTM
standards through VSI's program. Products that appear on this list have met or exceeded all the requirements of
for vinyl siding,
for insulated siding, or
for polypropylene siding, as verified by an independent quality control agency, including unannounced plant inspections twice each year.
Certified vinyl siding and insulated siding listed may also include colors that have been certified to meet or exceed the color retention requirements of
Certified polypropylene siding listed may also include colors that have been certified to meet or exceed the color retention requirements of ASTM D7856. Click on
the symbol next to product names, where applicable, for a complete
list of certified colors. Click here to learn more about color retention certification.
In 2017, ASTM revised standards for the three product categories eligible for certification under the VSI Product Certification Program.
The revised standards included updates to the wind load resistance ratings process and design pressure determination.
Additionally, the revisions require a specific design pressure rating be calculated and included on product or packaging labels.
One or more alternative design pressure ratings (for alternative installations) may be determined and included on labels.
A design pressure rating is a mathematical value given to siding that represents its ability to withstand a certain amount of wind load,
displayed in pounds per square foot (which can also be calculated to determined miles per hour).
A standard design pressure rating results from testing with the standard fastening method in accordance with ASTM D5206.
Alternative design pressure rating result from testing in accordance with ASTM D5206 using different attachment methods,
which would be described in the installation instructions.
Compliance with the design pressure ratings is verified on a periodic basis in order to maintain certification.
To view the list, please select the category below that best suits your needs to sort results by that category.
You can also search for a specific company, brand, or product name to determine certification status by using the "search" function at the top of
this page. Or use "search" to identify which brands and products are certified for a particular type of siding (for example, type
in "double 4" or "shake" to view all the brands and products that are certified in these categories, "insulated" for all certified
insulated siding, or "polypropylene" to see all certified
NOTE: The companies and products listed in this Official List of Certified Products and Colors are for certified siding products only. VSI
also sponsors the VSI Certified Installer Program.
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