The short answer
Understand the Scope
Commercial mold problems can range from a small patch on a wall to widespread contamination behind panels or in HVAC systems. The first step is to identify the source of moisture, since mold will return if the water issue is not fixed. Look for visible growth, musty odors, or water stains on ceilings, floors, and around windows.
You may need to test the air quality if occupants report health symptoms such as coughing or headaches. However, testing is not always necessary for small areas. A professional inspection can help you gauge the severity and choose the right course of action. Do not disturb large mold colonies, as that can release spores into the air.
Protect Occupants and Workers
Before any cleanup, you should isolate the affected area to prevent spores from spreading. Turn off HVAC systems that circulate air through the space, and seal doorways with plastic sheeting if possible. Occupants who are sensitive to mold, such as those with asthma, should stay away from the area until remediation is complete.
Anyone doing the cleanup should wear protective gear, including gloves, goggles, and an N95 respirator or better. For large or heavily contaminated areas, you may need to hire professionals who have the right equipment and training. Your priority is safety, so if you feel unwell during the work, stop and see a doctor.
- Wear gloves, goggles, and a respirator
- Seal off the work area with plastic sheeting
- Turn off HVAC systems to avoid spreading spores
- Remove porous materials like drywall or carpet if heavily moldy
- Use HEPA vacuums to capture spores after cleaning
- Dispose of contaminated materials in sealed bags
Clean and Remove Mold
For non-porous surfaces like glass, metal, or plastic, you can clean mold with a detergent solution and water. Scrub the area thoroughly, then dry it completely. For porous materials like drywall, insulation, or ceiling tiles, cleaning is often not enough, and you may need to remove and replace them.
Avoid using bleach as a primary cleaner on porous surfaces, as it may not penetrate deep enough. Instead, use a commercial mold cleaner or a mixture of water and mild detergent. After cleaning, dry the area within 24 to 48 hours to prevent regrowth. If the mold covers more than a small patch, consider hiring local water damage pros for the job.
Fix the Moisture Source
Mold will return unless you address the underlying moisture problem. Common causes include leaking pipes, roof leaks, poor ventilation, or high humidity. You may need to call a plumber or roofer to fix leaks, or improve air circulation with fans and dehumidifiers.
In areas with high humidity, such as restrooms or kitchens, use exhaust fans and keep humidity levels below 60 percent. Check for condensation on windows or pipes, and insulate them if needed. In hot, dry climates, sudden summer storms can bring moisture, so inspect your building after heavy rains.
Prevent Future Growth
After remediation, take steps to keep mold from coming back. Regularly inspect your building for water damage, especially after storms or plumbing issues. Keep gutters and downspouts clear, and ensure the ground slopes away from the foundation to prevent water pooling.
Maintain indoor humidity levels with air conditioning or dehumidifiers, and fix any leaks promptly. Use mold-resistant paint on walls and consider installing a dehumidifier in damp crawl spaces or storage areas. If you have recurring mold problems, a mold professional can help you identify hidden moisture sources and recommend long-term solutions.
Policies vary, and your insurer decides what is covered.
- Inspect roofs and plumbing regularly
- Keep humidity below 60 percent
- Clean and dry spills within 48 hours
- Use exhaust fans in high-moisture areas
- Fix leaks as soon as you notice them
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Call Now (623) 624-8391Frequently asked questions
Can I clean commercial mold myself?
You can clean small areas, under 10 square feet, with detergent and water. For larger areas or if mold is in HVAC systems, hire the pros. They have the equipment to contain spores and safely remove contaminated materials.
How long does commercial mold remediation take?
The time depends on the size of the area and the extent of contamination. A small patch might take a few hours, while a large infestation could take days. You can speed things up by acting quickly, but do not rush the drying process.
Does insurance cover commercial mold damage?
Policies vary, and your insurer decides what is covered. Some policies cover mold if it results from a covered water loss, like a burst pipe, but not from long-term neglect. Check your policy and talk to your insurance company for details.