Will Paint Kill Mold?

Understanding Mold and Painting: Key Insights and Practical Tips

Mold can be a significant issue in homes, not only for its unsightly appearance but also for the potential health risks it poses. Unfortunately, simply painting over mold isn’t a solution—it can worsen the problem and hide the growth without addressing its root cause. Here’s everything you need to know about mold, painting, and prevention.

Key Takeaways

• Paint and primer do not kill mold. They work only to prevent mold on already clean surfaces.

• Mold must be removed before painting, whether it’s standard mold or toxic black mold.

• Mold-resistant paints prevent future mold growth but don’t eliminate existing mold.

• Products like Kilz and Zinsser primers don’t kill mold. They work to inhibit mold on mold-free surfaces.

• If mold is present, it signals underlying moisture issues that must be resolved before painting, or the mold will return.

FAQs About Mold and Painting

Q: What happens if I paint over mold?
A: Painting over mold conceals it but doesn’t stop its growth. Mold can thrive unseen behind the paint, potentially causing health risks and structural damage.

Q: Can you paint over mold?
A: No. Mold must be thoroughly cleaned and removed with a mold-killing detergent before painting. Painting over mold can result in further growth and health issues.

Q: Does primer kill mold?
A: No. Primer, including mold-resistant types, requires a mold-free surface. It helps prevent mold but doesn’t kill existing colonies.

Q: Does Kilz kill mold?
A: Despite its name, Kilz doesn’t kill mold. It’s effective for preventing mold on clean surfaces but cannot eliminate existing mold.

Q: Can mold-resistant paint prevent mold?
A: Yes, but only if applied to a mold-free surface. Mold-resistant paints are great for damp areas but won’t solve an active mold issue.

Steps to Remove Mold Before Painting

1. Fix the Moisture Problem:
   Identify and resolve the source of moisture, such as leaks or poor ventilation. Install a high-quality fan in humid areas like bathrooms to prevent future growth.

2. Replace Affected Drywall if Necessary:
   Mold embedded deep in porous materials like drywall cannot be cleaned effectively and must be replaced.

3. Wear Proper Safety Gear:
   Use an N95 mask or respirator, gloves, and protective eyewear to protect yourself while handling mold.

4. Remove Peeling Paint:
   Scrape off loose, peeling paint with a paint scraper to prepare the surface.

5. Clean the Surface Thoroughly:

   • For Interiors: Use a mold-killing detergent like Fiberlock Shockwave, following the instructions.

   • For Exteriors: Apply Jomax or Mold Armor with a pump sprayer, then rinse thoroughly.

6. Let the Area Dry Completely:
   Ensure the surface is moisture-free before proceeding with any primer or paint.

7. Apply Mold-Inhibiting Primer:
   Use a primer like Fiberlock Aftershock to treat the cleaned area, covering the entire surface for even protection.

8. Paint with Mold-Resistant Paint:
   Choose a paint designed for humid environments, such as bathroom-specific paints.

9. Enhance Ventilation:
   Install and maintain a high-capacity fan to reduce moisture buildup and prevent future mold growth.

Common Areas Prone to Mold

• Behind drywall near plumbing leaks

• Bathrooms, kitchens, and basements with high humidity

• Air ducts and air conditioning systems

• Attics with poor ventilation or leaky roofs

• Exterior shaded areas and soffits with insufficient airflow

Health Risks of Mold Exposure

Mold exposure can cause a range of symptoms, including:

• Coughing and sneezing

• Fatigue and headaches

• Sore throat and irritated eyes

• Severe infections in individuals with weakened immune systems

If you suspect mold in your home, especially in hidden areas, it’s crucial to address the issue promptly. For persistent or extensive mold problems, contact a professional mold remediation service to ensure safe and effective removal.

For questions or advice on mold removal and painting, feel free to reach out at randy@reliapaint.com or call (850)544-3080. We’re happy to help, whether you’re tackling the project yourself or looking for expert assistance!