Chinese Drywall Gas Emissions Chart

By
Home Inspector with Jay Markanich Real Estate Inspections, LLC 3380-000723

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.

 

 

Posted by

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


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Re-Blogged 2 times:

Re-Blogged By Re-Blogged At
  1. Roy Kelley 05/27/2010 12:08 AM
  2. Jay Lloyd 05/27/2010 12:32 PM
Topic:
ActiveRain Community
Location:
Virginia Prince William County Bristow
Groups:
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Adventures in Home Inspecting
Tags:
chinese drywall
chinese drywall remediation recommendations

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Rainmaker
523,433
Ellen Dittman
Watson Realty Corp. - Middleburg, FL
#1 Stop for NE FLA-JAX/OP 904.535.1199 (TEXT OK) r

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

May 26, 2010 11:55 PM #1
Rainer
278,100
Kathryn Maguire
GreatNorfolkHomes.com (757) 560-0881 - Chesapeake, VA
Serving Chesapeake, Norfolk, VA Beach

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

May 26, 2010 11:56 PM #2
Rainmaker
1,844,065
Jay Markanich
Jay Markanich Real Estate Inspections, LLC - Bristow, VA
Home Inspector - servicing all Northern Virginia

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.

May 26, 2010 11:58 PM #3
Rainer
391,843
Akil Walker
TriStar Realty - Bowie, MD

Jay,

 

thank you for this help information. 

 

Akil

May 27, 2010 12:05 AM #4
Rainmaker
1,844,065
Jay Markanich
Jay Markanich Real Estate Inspections, LLC - Bristow, VA
Home Inspector - servicing all Northern Virginia

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

May 27, 2010 12:06 AM #5
Rainmaker
5,347,940
Roy Kelley
Realty Group Referrals - Gaithersburg, MD

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.

May 27, 2010 12:07 AM #6
Rainmaker
1,844,065
Jay Markanich
Jay Markanich Real Estate Inspections, LLC - Bristow, VA
Home Inspector - servicing all Northern Virginia

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.

May 27, 2010 12:11 AM #7
Rainmaker
3,240,691
Sally K. & David L. Hanson
EXP Realty 414-525-0563 - Brookfield, WI
WI Realtors - Luxury - Divorce

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 !

May 27, 2010 02:46 AM #8
Rainmaker
1,844,065
Jay Markanich
Jay Markanich Real Estate Inspections, LLC - Bristow, VA
Home Inspector - servicing all Northern Virginia

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

May 27, 2010 03:57 AM #9
Rainer
107,314
Jay Lloyd
Cape Coral Florida - Cape Coral, FL
Allpro Home Inspection

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

May 27, 2010 12:29 PM #10
Rainmaker
1,844,065
Jay Markanich
Jay Markanich Real Estate Inspections, LLC - Bristow, VA
Home Inspector - servicing all Northern Virginia

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.

May 27, 2010 01:51 PM #11
Rainmaker
233,467
Reuben Saltzman
Structure Tech Home Inspections - Minneapolis, MN
Delivering the Unbiased Truth.

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.

May 31, 2010 03:10 PM #12
Rainmaker
1,844,065
Jay Markanich
Jay Markanich Real Estate Inspections, LLC - Bristow, VA
Home Inspector - servicing all Northern Virginia

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!

May 31, 2010 10:30 PM #13
Rainer
128,855
Dan Quinn
The Eric Steart Group of Long & Foster Real Estate - Silver Spring, MD
Dan Quinn

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

Jan 18, 2011 01:07 AM #14
Rainmaker
1,844,065
Jay Markanich
Jay Markanich Real Estate Inspections, LLC - Bristow, VA
Home Inspector - servicing all Northern Virginia

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

Jan 18, 2011 07:45 AM #15
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Rainmaker
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Jay Markanich

Home Inspector - servicing all Northern Virginia
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