THE FORENSIC SCIENCE OF FLOORING: 4 Floors investigates floor failures for contractors, attorneys and insurance companies. We specify floor installation instructions, and materials specifications for airports, hospitals, hotels, schools and international retailers. Take a tour in the expertise pages and find your area of interest. You will find Wood, Athletic Flooring, Stone, Ceramic Tile, Carpet, Rubber, Vinyl, Epoxy, Linoleum, moisture vapor intrusion, Concrete and Slip & Fall.