Driveways, Patios and Walkways. Pool decks. With 26 years in business in the Cullman, Huntsville, and surrounding areas in Alabama and over 40 years experience in the concrete field. Ken’s Concrete Design is your first choice in Cullman Alabama and Huntsville Alabama for concrete driveway repair, stamped concrete, stained concrete, concrete repair, epoxy floors, concrete overlays, both residential and commercial.