What does efflorescence indicate about masonry?

Efflorescence indicates that there are salt deposits that have emerged from moisture within the masonry. This phenomenon occurs when water that contains soluble salts moves through the pores of the masonry, such as brick or concrete. As the water reaches the surface and evaporates, it leaves behind these white, powdery deposits. The presence of efflorescence highlights moisture issues within the masonry, which could be caused by various factors, such as poor drainage, leaks, or rising damp. Identifying efflorescence is crucial for home inspectors as it can signal underlying moisture problems that may affect the integrity and longevity of the masonry structure. Understanding efflorescence helps in diagnosing potential issues that need to be addressed to maintain the durability of the building.