Which of the following outdoor carpet backings requires a special adhesive?

Vinyl backing for outdoor carpets is specifically designed to withstand exposure to the elements, including moisture and UV rays. Because of its unique composition, a special adhesive is necessary to properly secure vinyl-backed carpets to the substrate. This adhesive ensures that the bond remains strong and durable over time, even in outdoor conditions where temperature fluctuations and exposure to water can otherwise weaken standard adhesives.

On the other hand, rubber, jute, and polyester backings have different characteristics and do not require unique adhesives. Rubber backings typically adhere well with conventional adhesives, while jute and polyester backings are made with materials that are compatible with standard floor covering adhesives. Thus, using a standard adhesive for those types is often sufficient, emphasizing why vinyl backing stands out necessitating a specialized adhesive.