Diy Concrete Floors In Home . A beautiful floor can give a special charm to your space. This is how to paint concrete floors for an awesome diy makeover. River Scene Incorporated Into Building S Polished Concrete Floor from www.pinterest.com A whole new floor for about $30 in materials! Wet floor w/water, small areas. It will cost you anywhere from $2 to $4 to paint your floors with regular concrete paint.