Home Depot is buying three companies in the flooring sector which will be integrated into Home Depot Supply. The three firms are Floors of Landover, Arvada Hardwood Floor Co. and Floorworks Inc.. They cater to professional customers and are said to work with 17 of the 20 largest home builders in America. Home Depot estimates the country’s flooring market at US $ 12 bn (€ 12 bn) in size.