, Minnesota, Iowa and Illinois for all of your concrete flooring and sub-flooring needs. Partners Shannan Stephens, Tom Porter and Troy Day have over 50 years of combined experience in concrete work. No matter the size or situation of the job, STS Concrete has the skilled team to provide outstanding service and quality solutions. Our commitment is to provide our customers fast, efficient and affordable concrete solutions by delivering high quality service and great value. Our attention to detail, understanding of building structures and listening to your needs allow us to meet the goal at hand, customer satisfaction.