Houses built between 2002 and 2009 may have defective drywall.
We Provide Expert Solutions for Defective Drywall.
Testing Services Provided By Stokes Environmental Associates
Stokes Environmental provides pre- and post-rebuild clearance testing related to defective drywall.
We will conduct pre-rebuilding clearance (PRC) testing using copper or silver coupons methodology or copper probe and dosimeter. All testing is performed in accordance with certifications required by the Virginia Department of Housing and Community Development.
A detailed report will be provided to document the assessment, including all methods, findings, conclusions, and recommendations as well as photographs, lab certificates and other requisite data.
Pre-Build and Post-Build Clearance Testing for Defective Drywall
Ensure the safety and integrity of your building projects with our specialized pre-build and post-build clearance testing for defective drywall. Our comprehensive services include:
Pre-Build Testing: Before construction begins, we conduct thorough testing of drywall materials to identify any potential defects or contaminants. This proactive approach helps prevent the use of substandard materials, safeguarding the health of future occupants and ensuring compliance with environmental regulations.
Post-Build Clearance Testing: After construction is complete, our experts perform detailed inspections and testing to confirm that the drywall installation meets all safety and quality standards. We check for the presence of harmful substances such as sulfur compounds and other contaminants that can cause health issues and structural damage over time.
Common FAQs About Defective Drywall
Defective drywall was imported from China to the US as early as 2002, and was used in new construction, additions and renovations of pre-existing houses until approximately 2008, with most used between 2004-2007. Some drywall imported from China contained extraneous metals and minerals such as sulfur, strontium, and iron and caused copper and other metal surfaces to corrode, especially under warm, humid conditions. As the problems caused by the off-gassing of sulfide gasses became apparent, importation of the problem drywall was ceased and remediation activity was initiated.
The problem drywall and all drywall dust needs to be removed and residue of the sulfur gases needs time to gas-off from wood framing and flooring materials prior to re-finishing the structure with known non-problem drywall.
Sometimes there is a sulfur (rotten egg) odor in homes containing defective Chinese drywall. However, odor alone is not an accurate indicator of the presence of Chinese drywall. Drywall that emits hydrogen sulfide and sulfur dioxide can be defined as defective drywall. Structures with defective drywall experience corrosion of copper wiring, copper tubing and aluminum tubing used in HVAC heat exchangers.
Laboratory testing of drywall samples can be performed to prove the drywall characteristics.
Air reactivity is measured in indoor air by corrosion gain in copper coupons. Indoor air is sampled using passive dosimetry, which involves exposing a probe with attached copper strips and then measuring for metal loss.
Our experienced team utilizes advanced testing methods and state-of-the-art equipment to provide accurate and reliable results. We deliver comprehensive reports with clear recommendations, ensuring your project is completed safely and successfully. Trust us to protect your investment and provide peace of mind with our pre-build and post-build clearance testing services for defective drywall.
