How It Works

Select the work to be done
Let us know what project you need help with and when you need it done - we'll match you with the right pros for the job.
Compare matched pros
Verify pro credentials, read reviews, ask questions, discuss availability, and request project estimates.
Complete your project
Hire the pro that's right for you and your budget. After the project is complete, let your community know how it went.
Powered by

The Home Depot

How to Identify Chinese Drywall

Pro Referral > Home Guides > Drywall > How to Identify Chinese Drywall
How to Identify Chinese Drywall

If your home was built or remodeled between 2001 and 2009, it’s possible that you have dangerous drywall installed in your home that came from China. Due to the rapid expansion of home construction during this time, as well as hurricanes that occurred in both 2004 and 2005, the U.S. began importing significant amounts of drywall from China.


The U.S. Consumer Product Safety Commission has compiled a webpage with extensive information to help you identify Chinese drywall and resolve any issues that may exist in your home. If you find that your home contains drywall that originated in China, you will find specific steps to follow to resolve the matter.


Once you know how to identify Chinese drywall, you can ascertain whether you have a problem or whether the drywall in your home is safe from dangerous chemicals.

    Secondly, check the drywall visually for evidence of blackening around copper electrical wiring or air conditioner evaporator coils.
  1. 1.Health Issues

    Symptoms associated with problematic Chinese drywall include irritated eyes and skin, persistent cough, breathing difficulties, bloody nose, runny nose, recurring headaches, asthmatic symptoms and sinus infections. It’s common for symptoms to improve when away from the drywall and to return during exposure times. Learn more about Chinese drywall health risks.

  2. 2.Visual Inspection

    The first criteria that your drywall must meet to fit the profile for Chinese drywall is that it must have been installed between 2001 and 2009. Secondly, check the drywall visually for evidence of blackening around copper electrical wiring or air conditioner evaporator coils. If your drywall was installed during the indicated period and you see this visual evidence, proceed to the next steps.

  3. 3.Corroborating Evidence

    According to the U.S. Consumer Product Safety Commission, drywall installed between 2005 and 2009 must meet two of the following criteria. Drywall installed between 2001 and 2004 must meet four of the following criteria.

    • • Evidence of sulfur in the core of the drywall
    • • Evidence of copper sulfide on grounding wires or air conditioner coils
    • • Chinese stamps or marks on the drywall
    • • Evidence of elevated sulfide gas emissions coming from the drywall
    • • Evidence of corrosion from the drywall

    Even if you find Chinese stamps or marks on the drywall, the drywall may not automatically have safety issues connected with it. The drywall must also meet one or more other the other criteria.

  5. 4.Problematic Chinese Drywall

    If you suspect that you have Chinese drywall causing problems in your home, you will first need to have outside lab testing of your drywall and grounding wires or air conditioner coils to diagnose the issue officially. Once you have this official testing performed and it indicates problematic Chinese drywall, proceed to remediate the problem.


    You must remove and replace the following:

    • • The problematic drywall
    • • All smoke alarms
    • • All carbon monoxide alarms
    • • Electrical distribution components
    • • Fusible fire sprinkler heads

    Make sure that a professional company performs all remediation work so that it will comply with local building codes, environmental regulations and OSHA standards. After completing the work, you should have your home inspected to make sure it meets code compliance and safety standards.


    Because the health threats and the damage to your electrical components can be potentially serious, it’s important to investigate possible drywall conditions to make sure you don’t have issues in your home.

Find Pros

Get your home project started today with help from Pro Referral’s qualified network of pre-screened and background-checked professionals available in your neighborhood.

Get Expert Advice

Submit your toughest home improvement questions to our knowledgeable experts and receive free personalized solutions, product recommendations, how-to advice, and more–all within 48 hours or less.