Sulfur in Drywall Causing Copper Corrosion in Homes

Some Florida homes have experienced blackening of copper pipes; often accompanied by pinhole corrosion. In some instances, odors are present as well. Generally these symptoms are first noticed by a failure of the home's air conditioning evaporator (indoor) coil. The off gassing of the drywall causes the corrosion that is indicated by the blackening of the coil and pinholes; this in turn results in the release of the refrigerant gas to the indoors of the home.

The cause has been traced to Chinese manufactured drywall (gypsum) imported after the demand increased following the hurricanes of 2004 and 2005. Information obtained from public agencies, report that drywall samples were placed in chambers with copper samples. It stated "copper turned black only in the chambers of imported gypsum. Microscopy testing conducted after 18 weeks showed pitting corrosion." The release also stated " the drywall is releasing these sulfur compounds after more than a year."

Bailey Engineering Corporation is able to:

• Identify suspect drywall through specific markings
• Take material and air samples from the building and have them analyzed for the presence of the suspect chemical/compounds
• Assist the client with how to resolve the problem

For more information, please contact:

Loren Brown, Service Coordinator
Bailey Engineering Corporation
Loren@baileyeng.com
www.baileyeng.com
Phone: (561) 744-1410
Fax: (561) 744-1454

Chinese Drywall causing Health Problems?

http://www.news-press.com/article/20081219/NEWS01/81219059/1075

http://news-press.com/apps/pbcs.dll/article?AID=200881220026