The Richard Zlatunich Residence included lots of concrete including a stout foundation, driveways, porches, stairs and landings; but one of the main features of his house was his interior floors. The floors were cast with a Tom Ralston Concrete proprietary mix design and then acid stained with 3-coats of dark brown acid stain. Richard says, β€œthe floors have held up well to my grandchildren and still maintain a dark and luxurious look; actually they look a lot like aged leather.” Zlatunich who is an architect by trade also said, β€œwe have lived in many different homes with tile, wood and stone floors but we have become fans of concrete.”