Coal Tar Pitch Roofing
1. General: For an informative, in-depth general article about various roof systems, see this page at the Whole Building Design Guide site, which is maintained by the National Institute of Building Sciences.
3. Safety: For health risks related to coal tar pitch exposure, see this page at the website of the National Center for Biotechnology Information. Safety precautions are important when working with this material.
6. Technical: See this Coal Tar Membrane System Specification, as well as Coal Tar Application and Design Considerations for insight into how a coal tar pitch roof system is put together. Both documents are made available by Durapax.