This Customer was referred to us by our local supply store in Redwood City . She was shopping for disinfectant to remove what she thought was mold . He told her that she better contact a professional for a free inspection before she purchased the item .
Upon inspection The white podwer she thought was mold turned out to be EFFLORESCENCE which told me there was some kind of water intrusion in opposite side of wall .
When we opened the crawlspace above the stairs, we found a kitchen sewer pipe that had been leaking for quite some time causing the efflorescence to form below
We cleaned the area so the plumber could make necessary repair .
We also sanitized and encapsulated the cement wall !!