What type of backing does the adhesive adhere to when sealing a seam?

When sealing a seam in carpet installation, the adhesive typically adheres to both the primary and secondary backing. The primary backing is the main layer of the carpet that provides structure and support, while the secondary backing, often made of materials such as latex or a felt material, serves to stabilize the carpet and enhance its durability.

By adhering to both types of backing, the adhesive ensures a strong bond that helps maintain the integrity of the seam, reducing the likelihood of separation over time. This dual adhesion is crucial in ensuring the performance and longevity of the carpet installation, as it allows for a seamless transition across seams and helps prevent issues such as fraying or shifting.

In contrast, options that suggest adherence to only one type of backing overlook the role that both backings play in the seam sealing process. The adhesive layer itself is not a backing, but rather a bonding agent, which further clarifies why it isn’t the correct choice.