Certified Siding
The VSI Product Certification Program was developed as a means for manufacturers to independently verify the performance of polymeric siding products.Polypropylene siding certified through the Program is verified by a third-party, accredited quality control agency to meet or exceed the ASTM D7254 Standard Specification for Polypropylene (PP) Siding. Certified polypropylene siding is tested to:
- Weather the elements over time without cracking, chipping, flaking, pitting, or peeling.
- Meet impact resistance requirements.
- Withstand wind pressures equivalent to 110 mph or more.
- Demonstrate flame spread performance equivalent to or better than wood materials commonly used in building construction.
Click here for the Official List of Certified Products.
