What happens to cellulosic carpet backing materials in response to excessive moisture?

Cellulosic carpet backing materials, which are often derived from natural fibers like cotton or other plant sources, respond to excessive moisture by undergoing a physical change. When these materials are exposed to moisture, they can absorb water, leading to a swelling effect. However, as they dry out or if humidity levels fluctuate, these materials tend to contract, causing them to shrink.

This shrinkage is due to the nature of the cellulose fibers, which can expand when wet and contract when dry. Unlike synthetic materials that may withstand moisture better, cellulosic fibers are more susceptible to changes in their structure due to moisture content. This characteristic can affect the overall stability and lifespan of the carpet, potentially leading to wrinkling, bubbling, or other forms of damage if not handled properly.

Understanding this behavior is crucial for carpet cleaning and maintenance professionals, as it emphasizes the importance of managing moisture levels during cleaning processes to prevent damage to cellulosic carpets.