Recognizing Signs of Moisture Damage in Basement Parging

The appearance of efflorescence, a white powdery substance on the surface of basement walls, is a telltale sign of moisture intrusion. It occurs when water-soluble salts within the masonry dissolve and migrate to the surface, leaving behind crystalline deposits as the water evaporates. Persistent efflorescence is a clear indication that moisture is present within the basement walls, possibly due to compromised parging.