I can provide some information to help you assess whether the drywall in your hallway closet might contain asbestos.
Asbestos was commonly used in building materials, including drywall, until the late 1970s when its health risks became well-known. If your home was built in 1970, there is a possibility that asbestos-containing materials were used, including in the drywall.
To determine if the drywall contains asbestos, you have a few options:
Visual inspection: While not definitive, you can look for signs of asbestos in the drywall, such as a rough texture, irregular patterns, or visible fibers. However, visual inspection alone is not enough to confirm the presence of asbestos.
Asbestos testing: The most reliable way to identify asbestos in drywall or any other material is through laboratory testing. You can collect a small sample of the drywall and send it to an accredited laboratory for analysis. They will use specialized techniques to detect asbestos fibers in the sample.
Consult a professional: If you're uncertain about handling potential asbestos-containing materials, it's best to consult with an asbestos abatement professional. They can safely take a sample for testing and provide advice on how to proceed if asbestos is found.
Remember, asbestos poses health risks when its fibers are released into the air and inhaled. If you suspect that the drywall contains asbestos, it's crucial not to disturb it or attempt to remove it yourself. Professional abatement or remediation may be necessary to handle and dispose of asbestos-containing materials safely.
Please take proper precautions and seek professional advice to ensure your safety and the safety of others in your home.