Redgranite Car wash was constructed by Shawn Hill in 1998 on the North side of Highway 21 on the West side of town at the intersection of Franklin Street and Hwy 21. The reisidents of Redgranite now have the convenience of keeping their vehicles cleaner, and it shows!.. This was the first car-wash that Shawn built, and he has expanded to 4 car washes today. They include Redgranite, Winneconne, Fremont and Oshkosh. Shawn is also the Owner/Broker of Century 21-West Side Realty located in Redgranite.