Ashi-Certified Inspector Vaughn H. discusses efflorescence as staining occurring on basement walls due to water contact, signifying water accumulation against the wall. Efflorescence is a crystalline deposit of salts that can form when water is present in or on brick, concrete, stone, stucco or other building surfaces. It has a white or light grey tint and consists of salt deposits that remain on the surface after water evaporates. In addition, efflorescence can appear as a powdery substance on floors and walls and requires special care to treat.
Water, rain and snow are the primary sources of moisture and may impact the degree of efflorescence. Condensation, groundwater wicking and interior activities also may affect the degree of moisture generation. This condition can lead to multiple problems and concerns for homeowners.