Which synthetic fiber is the most commonly used for residential carpeting?

Nylon is the most commonly used synthetic fiber for residential carpeting due to its durability, resilience, and resistance to abrasion. These properties make nylon an ideal choice for high-traffic areas in homes, as it can withstand heavy use without showing signs of wear and tear. Additionally, nylon fibers have excellent stain resistance when treated appropriately, making them easier to maintain and clean. Their ability to hold color well also contributes to the popularity of nylon, allowing for a wide range of vibrant colors and patterns in residential carpeting.

Other fibers, while used in carpets, do not offer the same balance of durability and aesthetic qualities as nylon. Cotton, for instance, is a natural fiber that is soft and comfortable but lacks the resilience needed for heavy foot traffic, making it less practical for most household applications. Wool, although a luxurious and natural option, can be more expensive and requires more maintenance. Polyester, while also a popular synthetic fiber, typically does not have the same level of durability as nylon, especially in terms of wear resistance and resilience. Thus, nylon's combination of features makes it the leading choice for residential carpeting.