How are joints between sections of flexible foam pipe insulation generally sealed?

The joints between sections of flexible foam pipe insulation are typically sealed using brush-on adhesive. This type of adhesive is specifically formulated to bond the foam together securely, ensuring that the insulation remains effective in preventing heat loss or condensation on the pipes. Brush-on adhesives are easy to apply and allow for a strong, durable seal that maintains the integrity of the insulation over time.

Additionally, using brush-on adhesive helps facilitate a neat application, allowing for thorough coverage over the joint area, which is essential for maintaining the insulation's thermal performance and ensuring there are no gaps or vulnerabilities that could lead to energy loss or moisture issues. Proper sealing of the joints is crucial in plumbing applications since it contributes to the overall efficiency and longevity of the insulation system.

The other options involve methods that might not achieve the same level of effectiveness or are not typically used for sealing foam insulation joints. Expanding adhesives and silicone sealants can be suitable for other applications but may not provide the seamless, reliable bond needed for flexible foam pipe insulation.