Roofing Materials Testing
1. Asbestos testing: A state-by-state directory of accredited testing laboratories is available at the website of the National Institute of Standards and Technology, which is part of the US Department of Commerce. Find a lab near you to perform Asbestos Fiber Analysis (PLM Test Method).
2. Standards: ASTM Standard Test Methods and Specifications can be viewed online if you sign up at the ASTM Reading Room page. None of the viewable documents may be downloaded or used for free, but it can be useful to see what they are.
3. TPO: "Physical Testing of Thermoplastic Polyolefin Membranes and Seams" is an article from 2010 which appeared in Interface magazine and is available on the GAF website.