What Causes Wrinkles in Area Rugs   We have all seen it. A nice big wrinkle in your custom area rug that looks terrible, people trip over it and you just can’t get rid of it. There is a relatively simple reason for this. Many custom areas rugs are made of all-natural fibers. Whether it is wool, cotton, linen, silk, or even a combination of these fibers. They all have one thing in common, they expand and contract as humidity changes. Some of these rugs may be woven and others may have a b...