When you are building your new home, there is no longer a need to choose between man-made carpets coated in chemicals and forest-depleting hardwoods. There are now eco-friendly flooring options that are plentiful and beautiful. 1. Wool Carpet: While wool has been used for centuries in rugs, people are now embracing the product for use in wall-to-wall carpeting. Not only is wool a sustainable, renewable material, but it is naturally fire resistant, non-allergenic, and long-lasting.