We recently performed mold remediation on a newly purchased home, a former grow house that showed mold-like growth on the walls. According to the seller, a professional company cleaned the house of mold. Still, following the cleaning, a contractor renovated the home, leading us to believe that surfaces were disturbed and that cleaning needed to be repeated. Since we were talking to a new homeowner, and they needed a history on the scope of work.
Some of our concerns were that the cleaning was not correctly done, that moisture issues were not adequately addressed, or worse, that the mold was covered up and it would regrow. Consequently, we recommended that the new owner perform an assessment and a moisture study. As a result, air and surface (drywall & insulation) samples were taken and returned with an elevated fungal ecology. Additionally, the moisture study showed some areas with a high moisture reading.
Based on our findings, remediation protocols were specified, and the remediation process was repeated; this time, we were sure it was done correctly since a clearance test was performed to ensure the house was currently safe to live in. Moisture is the leading cause of mold growth. Even if the company efficiently cleaned off the mold, mold would regrow if the moisture problem was not resolved. Rather than trying to find out if the contractor was covering up something, it is better to focus on existing moisture problems and fix them.
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