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Chinese Drywall Gas Emissions Chart

The chart below is a recent Consumer Product Safety Commission draft release of their testing of various manufacturer's drywall for sulfur gas emissions from Chinese Drywall.  All drywall tested was regular 1/2" drywall (from 4'x8' and 4'x12' samples) except for the one sample described as 3/8".  All the samples they tested were untreated.  Both Chinese and North American samples were obtained by the CPSC from various sources, as a part of its ongoing investigation.

Two symbols need explanation:

^ This sample was collected in China and is not believed to have been imported into the United States.

* This is a sub-sample tested that was known to be imported from China into the U.S. in either 2006 or 2007.

 

The testing was conducted by the Lawrence Berkeley National Laboratory and published in March 2010.

You will notice that the manufacturers and labels thought to be problems turn out to be the ones with terrifically high hydrogen sulfides, and other gaseous discharges, which are what cause corrosion to metals and medical problems.  There were rumors that American-made drywalls were also causing problems, and that turns out not to be the case.  They are testing as safe.  That would follow since we have been using American-made drywalls since World War II and have never before experienced the recent problems with Chinese products.

My recommendation:  When you buy drywall, or consult with your builder as to which drywall will be used on your house, look on the back side (or the edge if two pieces come together) to see the stamps or manufacturer logo.  It seems you are safe with American brands.

 

 

Jay Markanich Real Estate Inspections, LLC  

Based in Bristow, serving all of Northern Virginia.

Office (703) 330-6388   Cell (703) 585-7560

www.jaymarinspect.com


Comment balloon 15 commentsJay Markanich • May 27 2010 06:50AM

Comments

That is very informative. Very interesting to see in this perspective.

Posted by Ellen Dittman, #1 Stop for NE FLA-JAX/OP 904.535.1199 (TEXT OK) r (Watson Realty Corp.) about 10 years ago

Great post to set the record straight.  There is still a lot of misinformation out there regarding Chinese Drywall.

Posted by Kathryn Maguire, Serving Chesapeake, Norfolk, VA Beach (GreatNorfolkHomes.com (757) 560-0881) about 10 years ago

Ellen - I have been waiting for such a chart.  It finally came out two days ago.

Kathryn - that is for sure.  These test results will go a long way toward correcting so many errors.

Posted by Jay Markanich, Home Inspector - servicing all Northern Virginia (Jay Markanich Real Estate Inspections, LLC) about 10 years ago

Jay,

 

thank you for this help information. 

 

Akil

Posted by Akil Walker (Bennett Realty Solutions) about 10 years ago

Akil - this is my 8th blog on Chinese Drywall.  The others are informative too.

Posted by Jay Markanich, Home Inspector - servicing all Northern Virginia (Jay Markanich Real Estate Inspections, LLC) about 10 years ago

Interesting information. Thanks for sharing. Let's hope that the home inspectors are able to identify dry wall problems.

 Blooming for home buyers in Maryland.

Posted by Roy Kelley (Realty Group Referrals) about 10 years ago

Roy - it isn't easy.  We have to be able to see the back side.  Testing is coming, but for now I will try to simply investigate.

Posted by Jay Markanich, Home Inspector - servicing all Northern Virginia (Jay Markanich Real Estate Inspections, LLC) about 10 years ago

From the one step further department...if you sold or bought a home in the last five years.....talk to the builder and find out what was used.....yicks !

Posted by Sally K. & David L. Hanson, WI Real Estate Agents - Luxury - Divorce (EXP Realty 414-525-0563) about 10 years ago

Precisely, but sometimes they used a mix of materials S&D!

Posted by Jay Markanich, Home Inspector - servicing all Northern Virginia (Jay Markanich Real Estate Inspections, LLC) about 10 years ago

Hi Jay, We're finally getting some statistical information from the CPSC. Are you seeing much of this in VA? jay

Posted by Jay Lloyd, Allpro Home Inspection (Cape Coral Florida) about 10 years ago

Jay - my understanding is that there are between 30 and 40 houses with it in VA, and they are in the Norfold, VA Beach areas.  I have seen nothing yet in Northern VA.

Posted by Jay Markanich, Home Inspector - servicing all Northern Virginia (Jay Markanich Real Estate Inspections, LLC) about 10 years ago

Great stuff.  Thankfully we don't have any of that drywall up here in Minnesota, but when I get people asking about it, I send 'em to your blog.

Posted by Reuben Saltzman, Delivering the Unbiased Truth. (Structure Tech Home Inspections) about 10 years ago

I haven't heard Reuben.  But who knows what "distributors" have it in stock and will try to palm it off on unawares retailers in areas where it isn't known to be now!

Posted by Jay Markanich, Home Inspector - servicing all Northern Virginia (Jay Markanich Real Estate Inspections, LLC) about 10 years ago

Excellent.  I am a visual guy and this chart makes it soooo clear.  Thanks Jay!

Posted by Dan Quinn, Dan Quinn (The Eric Steart Group of Long & Foster Real Estate) over 9 years ago

Wow, Dan, an oldie but a goodie!  Glad you could stop by!

Posted by Jay Markanich, Home Inspector - servicing all Northern Virginia (Jay Markanich Real Estate Inspections, LLC) over 9 years ago

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