What is a key characteristic of contact adhesive?

The key characteristic of contact adhesive is that it requires adhesive on both sides. This type of adhesive works by applying it to the surfaces that will be bonded together and allowing it to dry before bringing those surfaces into contact. Upon pressing the two surfaces together, an immediate bond is formed. This feature is crucial for achieving a strong and durable bond, making it suitable for a wide range of materials, such as laminates, flooring, and upholstery.

In contrast, the other options don't accurately reflect the nature of contact adhesives. For instance, requiring adhesive on one side would limit the effectiveness of the bond, and stating that it can only be used in dry conditions overlooks its versatility in different environmental situations, as long as the bond is made correctly. Similarly, while temperature can affect the curing and performance of many adhesives, saying that contact adhesive is not affected by temperature would not be accurate, as extreme temperatures can impact its effectiveness and performance.