Mold Prevention: 7 Steps for Memphis Homeowners

Memphis Has a Mold Problem

Memphis averages 75% relative humidity year-round. In summer, it regularly exceeds 85%. That’s perfect conditions for mold growth — and it means Memphis homeowners face a higher mold risk than most of the country.

After remediating mold in hundreds of Memphis homes, I can tell you: prevention is always cheaper than remediation. Here are the 7 steps that actually work.

1. Control Indoor Humidity

Target: 30-50% relative humidity.

Buy a hygrometer ($10-15 at any hardware store) and monitor your indoor humidity. If it’s consistently above 50%, you need to act.

• Run your AC in summer — air conditioning dehumidifies as it cools
• Use exhaust fans in bathrooms and kitchens every time
• Run a dehumidifier in basements and crawlspaces
• Don’t air-dry clothes indoors without ventilation

Memphis tip: Your AC should be running almost constantly June through September. If it cycles off frequently, it’s oversized and not dehumidifying properly.

2. Fix Leaks Immediately

This sounds obvious, but the #1 cause of mold in Memphis homes is water leaks that were “not that bad” for weeks or months.

• Check under sinks monthly
• Inspect around toilets for moisture
• Look for water stains on ceilings (these mean active or recent leaks above)
• Check washing machine hoses for bulging or cracks
• Inspect your water heater for corrosion or drips

Rule of thumb: Any leak, no matter how small, should be fixed within 24 hours.

3. Ventilate Properly

Mold thrives in stagnant, humid air. Keep air moving:

• Run bathroom exhaust fans for 30 minutes after showers (not just during)
• Use kitchen exhaust when cooking or running the dishwasher
• Keep interior doors open to allow air circulation
• Make sure dryer vents to the outside, not into the attic or crawlspace

4. Maintain Your Crawlspace

Memphis’s clay soil and high water table make crawlspaces a prime mold location.

• Install a vapor barrier (6-mil polyethylene minimum) over exposed soil
• Consider encapsulation for serious moisture issues
• Ensure crawlspace vents are clear and functional
• Check for standing water after heavy rains
• A crawlspace dehumidifier is one of the best investments a Memphis homeowner can make

5. Grade Your Yard Away from the Foundation

Water should flow AWAY from your house, not toward it. Check:

• Soil grade slopes at least 6 inches over the first 10 feet from foundation
• Gutters are clean and downspouts extend at least 6 feet from the house
• Window wells have proper drainage
• Sump pump (if you have one) is functioning and has a battery backup

After Memphis’s spring storms, walk your property and check for any areas where water pools near your foundation.

6. Inspect Your Attic

Memphis’s temperature swings cause condensation in attics, especially in winter when warm interior air meets the cold roof deck.

• Check for dark staining on roof sheathing
• Ensure soffit vents aren’t blocked by insulation
• Verify bathroom exhaust fans vent to the outside (NOT into the attic)
• Look for daylight through the roof (indicates potential water entry points)

A surprising number of Memphis mold problems start in the attic and spread down through the walls.

7. Act Fast After Any Water Event

Whether it’s a burst pipe, storm damage, or appliance failure — the 24-48 hour window is critical.

• Extract water immediately
• Get professional-grade drying equipment running
• Apply antimicrobial treatment to prevent mold
• Monitor moisture levels until the area is completely dry

The cost of professional water extraction ($1,500-$3,000) is a fraction of what mold remediation costs if you wait ($3,000-$15,000+).

When Prevention Isn’t Enough

If you spot signs of mold — musty odor, visible growth, unexplained allergies — don’t ignore it and don’t try to clean it yourself. Areas over 10 square feet require professional remediation.

Resto Experts offers free mold inspections throughout the Memphis area. We use moisture meters and thermal imaging to find hidden mold before it becomes a major problem.

Call (901) 519-2580 for a free mold inspection. Available 24/7.