Koy Concrete is a family-owned company that was founded in 1956. It offers an array of concrete products for residential, commercial and industrial projects. The company provides crushed gravel, limestone, mortar sand, and organic compost and mix. It also offers top soil and concrete sand. The company s project portfolio includes Christus St. Catherine Hospital, Katy Morton Ranch High School, Katy Mills Mall, Williams Tower Water Wall and Kingsland Medical Center. Koy Concrete plants and trucks are certified by the state of Texas.