APEX fiberglass exterior siding system is the most revolutionary home exterior on the planet. Made with Ultrex^®, a patented material pioneered by Marvin^®, APEX is a new category of house siding that is stronger and more durable than fiber cement, impervious to moisture and features a rich, bold acrylic finish that resists fade and will never require repainting or resealing. By seamlessly combining these aesthetic and functional features into one material APEX has created an innovative exterior siding system that will maintain its beauty year after year.