Creosote and soot gradually build up in stovepipes and chimneys. In today's systems, this is the difference between myriad connecting "stovepipes" and effective "integrated" solutions. The term evokes the image of stovepipes rising above buildings, each functioning individually. Shotgun chaps, sometimes called "stovepipes", were so named because the legs are straight and narrow. Stovepipes were assembled in various garages, and then hung on a long wire for painting.