Mold growth poses significant risks to both human health and the structural integrity of buildings. Prompt identification and remediation are essential to prevent further damage and potential health problems. Mold inspection is a crucial step in this process, and there are several ways to identify mold problems.

Visual Inspection

The first step in any mold inspection is a thorough visual examination of the property. Professionals will look for visible signs of mold growth, water damage, and moisture intrusion. This process may involve inspecting walls, ceilings, floors, HVAC systems, and other areas prone to mold growth. 

In some cases, inspectors may use specialized tools, such as moisture meters, to detect hidden moisture behind walls or under flooring, which can indicate the presence of mold.

Air Sampling

Air sampling is a common method used to detect mold spores in the indoor environment. This technique involves collecting air samples from various areas within the property, which are then analyzed in a laboratory to identify the type and concentration of mold spores present. 

Air can be sampled in several different ways:

• Spore traps collect airborne mold spores on a sticky surface or in a liquid medium, which is then analyzed under a microscope

• Impaction samplers use a high-speed air stream to force mold spores onto a collection surface, typically a microscope slide or agar plate

• Filtration samplers draw air through a filter that captures mold spores, which are then removed and analyzed

A mold inspection professional will know the most suitable way to take an air sample in your building.

Surface Sampling

Surface sampling gets samples directly from surfaces suspected of mold growth. The method can help both confirm the presence of mold and identify the specific species present. Common surface sampling techniques include:

• Tape lifts: Using clear adhesive tape, inspectors press the tape onto the suspected mold growth and then remove it, capturing mold spores on the adhesive surface.

• Swab samples: Inspectors use a sterile swab moistened with a liquid medium to collect mold samples from surfaces.

• Bulk samples: A small piece of the contaminated material (e.g., drywall, carpet) is removed and then sent to a laboratory for analysis.

Infrared Thermography

Infrared thermography is a non-destructive inspection method that utilizes an infrared camera to detect temperature differences on surfaces. Since moisture is typically cooler than the surrounding environment, this technology can help identify areas with hidden moisture, which may indicate the presence of mold.