Dallas Drywall: AC Dust Fueling Sinus Mold?

By Franklin Everett Shaw

November 1, 2025

The musty smell lingered, a constant reminder of the storm that ravaged the Gulf Coast years ago. But the real damage wasn’t just the water; it was what came after. Cheap, imported drywall, rushed in to rebuild, now seemed to be making people sick in their own homes, even as far away as Dallas.

The connection between “Dallas drywall,” imported drywall used in homes after Hurricane Katrina, and the growth of sinus mold due to dust exposure via HVAC systems is a serious concern that Dallas-area homeowners need to address proactively. This isn’t just about a bad smell; it’s about your health and the long-term value of your property. Let’s dive into how to identify the problem, test your air, and take concrete steps to fix it.

Identifying the Problem: Is Your Dallas Home at Risk?

The infamous “Chinese drywall” (though it came from other countries too) was used extensively in the rebuilding efforts after Hurricane Katrina, and some of it made its way to Dallas during construction booms. The telltale signs aren’t always obvious, but here’s what to look for:

The “Rotten Egg” Smell: This is the most common indicator. It’s a sulfur-like odor, often stronger in warmer, more humid areas of the house.
Corrosion of Electrical Components: Check your electrical outlets, wiring, and even the copper coils in your air conditioning unit. If you see blackening or corrosion that seems excessive, it could be a sign.
Date of Construction/Renovation: Homes built or renovated between 2004 and 2007 are at higher risk. This is when the problematic drywall was most prevalent.
Drywall Markings: Sometimes, the drywall itself will have markings indicating its origin. Look for stamps or labels that seem unusual or unfamiliar.

Why Dallas? The HVAC Connection

Dallas’s climate plays a significant role. The intense heat and humidity, combined with the constant use of air conditioning, create a perfect environment for mold growth. The dust from the defective drywall gets circulated through the HVAC system, providing a constant food source for mold spores. This leads to sinus infections, allergies, and other respiratory problems.

Testing Your Air Quality: Getting a Clear Picture

Don’t rely on guesswork. Get your air tested by a qualified professional. Here’s what to look for in a Dallas-area air quality testing service:

Mold Spore Count: This will tell you the concentration of mold spores in your air.
Mold Species Identification: Knowing what kind of mold is present is crucial. Some molds are more toxic than others.
Hydrogen Sulfide (H2S) Testing: This gas is a byproduct of the defective drywall and a key indicator of its presence.
Proper Licensing and Certification: Ensure the company is licensed and certified to perform mold testing in Texas. Look for certifications like Certified Mold Inspector (CMI) or Certified Mold Remediator (CMR).

A common mistake is relying on DIY mold test kits. These kits often provide inaccurate results and don’t identify the specific mold species. Invest in a professional assessment for a reliable diagnosis.

Remediation: Taking Action in Dallas

If testing confirms the presence of problematic drywall and elevated mold levels, remediation is necessary. This is not a DIY project. Here’s a step-by-step approach:

Hire a Certified Mold Remediation Specialist: Look for companies with CMR certification and a proven track record in Dallas. Check their reviews and ask for references.
Containment: The remediation team will seal off the affected areas to prevent the spread of mold spores to other parts of your home.
Drywall Removal: The defective drywall must be removed and disposed of properly. This is a messy and potentially hazardous process.
Cleaning and Disinfection: All surfaces in the affected area will be thoroughly cleaned and disinfected to kill any remaining mold spores.
HVAC System Cleaning: The HVAC system must be professionally cleaned to remove any mold and drywall dust. This may involve duct cleaning and coil cleaning.
Reconstruction: Once the area is clean and dry, new, safe drywall can be installed.
Post-Remediation Testing: After the remediation is complete, a final air quality test should be performed to ensure that the mold levels have returned to normal.

Dallas-Specific Resources

Texas Department of State Health Services (DSHS): The DSHS provides information on mold and mold remediation in Texas.
Dallas County Health and Human Services: This agency can provide information on local health concerns and resources.
Better Business Bureau (BBB): Check the BBB for ratings and reviews of mold remediation companies in Dallas.

Challenges and Pitfalls

Finding Qualified Professionals: Not all mold remediation companies are created equal. Do your research and choose a company with experience and a good reputation.
Cost: Mold remediation can be expensive, but it’s a necessary investment in your health and the value of your home. Get multiple quotes and compare services.
Hidden Mold: Mold can grow in hidden areas, such as behind walls or under floors. A thorough inspection is crucial to identify all sources of mold.
Insurance Coverage: Check your homeowner’s insurance policy to see if mold remediation is covered. Some policies have exclusions or limitations.

Preventing Recurring Mold Issues

Once the remediation is complete, take steps to prevent mold from returning:

Control Humidity: Keep your home’s humidity level below 60%. Use a dehumidifier if necessary.
Ventilation: Ensure adequate ventilation in bathrooms and kitchens.
Regular HVAC Maintenance: Have your HVAC system inspected and cleaned regularly.
Address Leaks Promptly: Repair any leaks in your roof, plumbing, or windows immediately.

The Bottom Line

If you suspect that your Dallas home may have been built with defective drywall, don’t ignore the signs. Take action to protect your health and your property. By identifying the problem, testing your air, and taking appropriate remediation steps, you can create a healthy and safe living environment for yourself and your family. Ignoring this issue won’t make it go away; it will only allow the problem to worsen and potentially lead to more serious health consequences.