Which type of Exterior Insulation and Finish System (EIFS) is the most common?

The most common type of Exterior Insulation and Finish System (EIFS) is commonly recognized as the Barrier or face-seal PB-EIFS. This system utilizes a waterproof barrier that is intended to prevent moisture ingress. The barrier method relies on the exterior surface to shed water, keeping it from penetrating into the insulation layer.

This type of EIFS is prevalent due to its efficiency in energy-saving applications and is often preferred in various climates, particularly where maintaining thermal performance is essential. In practice, the face-seal method can be effective when properly installed, as it provides a seamless envelope that protects the underlying structures from moisture infiltration.

Other EIFS types, such as drainage EIFS, focus on managing moisture differently by incorporating drainage channels to redirect water that may penetrate the outer layer, but they are not as universally adopted as the barrier method. Classic EIFS and stucco EIFS represent older or alternative systems that may not have the same level of market presence or application as the barrier system. Hence, the widespread use of barrier or face-seal PB-EIFS reflects its established and trusted status within the construction industry.