The long & short of carpet

Density

In carpet, density refers to a numeric representation of how tall the yarns are, how tightly tufted they are, relative to the weight in ounces per square yard. This number may be more meaningful to commercial carpet buyers' then residential end users because many popular residential styles are "shaggy" in appearance, are created by using taller yarns, tufted further apart, and therefore have lower density ratings. A high-density factor does not mean heavy carpet, the highest density carpets are often commercial carpets that are short, tight, firm, and weigh less than most residential carpets. Carpets with higher density ratings use to indicate a firmer or a harder feeling carpet, but with the introduction of soft yarns, this is no longer true.