Carpet comes in two broad types: synthetic and natural fiber. Synthetics are durable, stain resistant and affordable. Styles with a low, tight loop and a short pile are less likely to show footprints or vacuum marks. Nylon is the most popular synthetic fiber, followed by olefin, polypropylene and polyester. Within synthetics you’ll find a range of durability and softness. Olefin and polyester, for example, attract oil and dust and will “ugly out” (flatten or mat down) over time, says Kristopher Ayoub, co-owner of Ayoub N&H, a full-service flooring store in Kensington, Md.

Wool is the most common natural fiber, and pretty much the only one used in wall-to-wall carpet. Eco-friendly fibers such as jute, sisal, coir and bamboo are popular in area rugs, but they are too weak or too coarse to be made into carpet. Wool is more expensive and prone to stain than synthetics, but it’s more luxurious and the durable, resilient fibers wear well.

“Think about what you really want,” Ayoub says. “Some carpet is more durable, but not easy to clean, versus stainproof but doesn’t last 20 years.” One aesthetic factor to consider: Wool typically comes in neutral hues, whereas synthetics can be dyed almost any color.

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