What is the primary concern when dealing with efflorescence in masonry?

Efflorescence primarily concerns the presence of water-soluble salt deposits that form on the surface of masonry. This phenomenon occurs when water evaporates from the surface of masonry units, such as brick or concrete, leaving behind these mineral deposits. These salts can be problematic because they can indicate moisture issues within the masonry system.

Moisture allows for the transport of soluble salts from within the masonry or from the soil into the material. The accumulation of these salts can lead to damage over time, affecting the appearance and potentially leading to deterioration of the masonry. Addressing the underlying moisture issues is essential to prevent further efflorescence and maintain the longevity and performance of the masonry structure.

While aesthetic concerns are significant, as efflorescence can cause unsightly white stains, the primary issue remains tied to the presence of those salts and the moisture that causes them. This makes understanding and managing efflorescence critical for any masonry contractor or builder. Thus, focusing on the water-soluble salt deposits provides insight into both immediate aesthetic issues and long-term structural health.