Vinyl Siding Institute
Vinyl siding has the lowest total installed cost (materials + labor) of any exterior cladding, whether for new construction or remodeling. Most manufacturers offer lifetime warranties. Homeowners benefit from vinyl siding's lifetime value because it never needs painting, caulking, or re-pointing.
VSI certified vinyl siding (ASTM D3679), polyproylene siding (ASTM D7254), and insulated siding (ASTM D7793) are all verified by an independent quality control agency to meet or exceed these ASTM quality standards. VSI's Certified Installer Program teaches and tests to ASTM D4756.