Mold Inspection & Removal in St. Louis, MO

Mold grows when spores, which are always present in the air, land on damp organic materials such as drywall, wood, carpet or insulation. After water damage, growth can begin within 24 to 48 hours if materials are not dried. Warm temperatures, high humidity and poor air circulation, common in St. Louis summers, speed it up.

Before remediation begins, the moisture source must be found and fixed, or mold will return. The affected area is then contained with plastic sheeting and placed under negative air pressure with HEPA filtration so spores do not spread to clean parts of the home. Occupants and pets should stay out of the work area.

Professional mold remediation follows a set process: fix the moisture source, contain the work area, run HEPA air filtration under negative pressure, remove mold-damaged porous materials such as drywall and insulation, HEPA-vacuum and clean framing and surfaces, apply antimicrobial treatment, and dry everything to normal moisture levels. Rebuilding follows once the area is confirmed clean.

Small areas of surface mold, generally less than about 10 square feet on hard surfaces, can often be cleaned by a homeowner with proper gloves, eye protection and a respirator. Larger areas, mold inside walls or HVAC systems, mold after sewage or flooding, or anyone with health sensitivities calls for professional remediation with containment and HEPA filtration.

Hidden mold often reveals itself through a persistent musty odor, recent water damage that was not professionally dried, stains or discoloration on walls and ceilings, peeling paint or worsening allergy-like symptoms indoors. It commonly grows inside drywall cavities, under flooring, in crawlspaces and in HVAC ducts. A professional inspection with moisture mapping can locate it.

It depends on the cause. Mold that results from a sudden, covered water loss, such as a burst pipe, may be covered, often with a sublimit. Mold caused by long-term leaks, humidity or lack of maintenance is usually excluded. Review your policy’s mold provisions, and document the original water event as soon as it happens.

Mold exposure can cause allergy symptoms such as sneezing, runny nose, itchy eyes and skin irritation, and it can trigger asthma attacks in sensitive people. Infants, older adults and people with weakened immune systems or respiratory conditions are at higher risk. Anyone with health concerns should consult a medical professional and avoid disturbing mold themselves.

Yes, if the moisture problem is not fixed. Mold spores are always present in the air and will grow again anywhere materials stay damp. Lasting results require repairing the leak or drainage problem, drying materials to normal levels and keeping indoor humidity below about 50 to 60 percent with dehumidifiers and good ventilation.

Most residential mold remediation projects take one to five days, depending on the size of the affected area, how much material must be removed and how long drying takes. Small, contained jobs may be finished in a day, while larger basement or attic projects take longer. Rebuild work, if needed, is scheduled after remediation.

Remediation works differently depending on the material. Hard, non-porous surfaces such as metal, glass and sealed concrete can be cleaned. Semi-porous materials like framing lumber can usually be cleaned and treated. Porous materials such as drywall, insulation, carpet and ceiling tiles cannot be reliably cleaned once mold grows into them and must be removed.