Savannah Stucco: Humidity Hiding Deadly Lung Mold?

By Franklin Everett Shaw

April 8, 2026

The lowcountry charm of Savannah, Georgia, with its historic squares and Spanish moss-draped oaks, hides a persistent threat: mold. Stucco homes, beautiful as they are, can be particularly vulnerable to mold growth, especially in Savannah’s humid climate. Ignoring this issue can lead to serious health problems and costly structural damage.

This guide is your comprehensive resource for tackling mold behind stucco in Savannah. We’ll cut through the confusion and provide actionable steps to identify, test, and remediate mold, keeping your home healthy and your wallet happy.

First, let’s talk about why stucco is a problem in Savannah. Stucco, while durable, is porous. Savannah’s high humidity and frequent rainfall mean that moisture can easily penetrate the stucco, creating a breeding ground for mold behind the siding. Improper installation, cracks in the stucco, and inadequate flashing around windows and doors exacerbate the problem.

How do you know if you have mold? Look for these telltale signs:

Visible Mold: Obvious patches of black, green, or brown growth on the stucco or around windows and doors.
Musty Odor: A persistent, earthy smell inside or outside your home, especially after rain.
Water Stains: Discoloration or staining on the stucco, indicating water intrusion.
Allergic Reactions: Increased allergy symptoms like sneezing, coughing, or skin irritation, especially when indoors.

Don’t confuse mold with efflorescence. Efflorescence is a white, powdery deposit that can appear on stucco. It’s caused by salt deposits left behind by evaporating water and is generally harmless. Mold, on the other hand, is a living organism that can cause health problems and structural damage. A simple test: efflorescence will dissolve in water, while mold will not.

Now, let’s get to testing. DIY mold testing kits are readily available at hardware stores like Lowe’s on Victory Drive or Home Depot on Ogeechee Road. These kits typically involve collecting a sample from a suspected moldy surface and sending it to a lab for analysis. While convenient, DIY kits have limitations. They can tell you if mold is present, but not always what kind or the extent of the problem.

For a more thorough assessment, consider a professional mold inspection. A qualified Savannah mold inspector will use specialized equipment, like moisture meters and thermal imaging cameras, to detect hidden moisture and mold growth behind the stucco. They can also take air samples to identify the types and concentrations of mold spores present. Expect to pay between $300 and $800 for a professional inspection, depending on the size of your home and the scope of the inspection. Companies like Coastal Mold Testing and Savannah Mold Pros are local options to consider.

What if the test comes back positive? The next step is remediation. For small areas (less than 10 square feet) of visible mold, you may be able to handle the cleanup yourself. Here’s how:

Safety First: Wear protective gear, including gloves, a mask (N-95 or better), and eye protection.
Containment: Seal off the affected area with plastic sheeting to prevent the spread of mold spores.
Cleaning: Mix a solution of bleach and water (1 part bleach to 10 parts water). Apply the solution to the moldy surface and scrub thoroughly.
Drying: Dry the area completely with fans or a dehumidifier.
Disposal: Dispose of contaminated materials (rags, sponges, etc.) in sealed plastic bags.

Important: Never mix bleach with ammonia or other cleaning products, as this can create toxic fumes.

For larger areas of mold growth, or if you suspect mold is present behind walls or in hard-to-reach areas, it’s best to call in a licensed Georgia mold remediation specialist. These professionals have the training, equipment, and experience to safely and effectively remove mold and address the underlying moisture problem. They will follow strict protocols to prevent the spread of mold spores and ensure that your home is properly decontaminated. Look for companies certified by organizations like the IICRC (Institute of Inspection, Cleaning and Restoration Certification).

A common mistake homeowners make is simply cleaning the visible mold without addressing the source of the moisture. This is like mowing the lawn without pulling the weeds – the mold will just keep coming back. To prevent future mold growth, you need to identify and fix any leaks or sources of moisture intrusion.

Here are some preventative measures specific to Savannah’s climate:

Regular Inspections: Inspect your stucco regularly for cracks, damage, or signs of water intrusion. Pay close attention to areas around windows, doors, and rooflines.
Proper Ventilation: Ensure adequate ventilation in your home, especially in bathrooms and kitchens. Use exhaust fans to remove moisture after showering or cooking.
Dehumidifiers: Use dehumidifiers to maintain a humidity level below 60% in your home.
Landscaping: Keep shrubs and plants trimmed back from the stucco to allow for proper airflow.
Gutter Maintenance: Clean your gutters regularly to prevent water from overflowing and running down the stucco.
Professional Sealing: Consider having your stucco professionally sealed to help prevent water penetration.

Stucco remediation can be expensive, ranging from a few hundred dollars for minor repairs to several thousand dollars for major projects. However, ignoring the problem will only lead to more extensive damage and higher costs in the long run.

Don’t let mold take hold of your Savannah home. By understanding the risks, taking proactive steps to identify and remediate mold, and implementing preventative moisture control strategies, you can protect your health, your home, and your investment. Remember, when in doubt, consult with a qualified professional. Your peace of mind is worth it.