- Author
- Rossiter, W. J. | Mathey, R. G.
- Title
- Elastomeric Roofing: A Survey. Technical Note.
- Coporate
- National Bureau of Standards, Washington, DC
- Sponsor
- National Bureau of Standards, Washington, DC Department of the Air Force, Washington, DC Department of the Navy, Washington, DC Department of the Army, Washington, DC
- Report
- NBS TN 972, July 1978,
- Distribution
- Available from National Technical Information Service
- Keywords
- roofing; elastomers; roofs; construction materials; membranes; substrates; weathering; mechanical properties; performance; reviews
- Identifiers
- roofing materials; state of the art
- Abstract
- In recent years the use of elastomeric roofing systems in the United States has been increasing. A survey was conducted to ascertain the current state-of-the art of these roofing systems. The information obtained in the survey was gathered from a literature search complemented by the opinions of people knowledgeable in the field including researchers, contractors, manufacturers and users. A listing of the current elastomeric roofing materials was compiled, along with test methods for determining the properties of membranes fabricated with these materials. The principal materials, available in either liquid or sheet applied systems, included acrylic, butyl, chlorosulphonated polyethylene, EPDM (ethylene propylene diene terpolymer), neoprene, polyvinyl chloride (PVS) and vinyl, silicone and urethane. In addition to these materials some composite membranes were also available. Factors affecting the performance of the membranes were identified including durability, design of the roofing system, substrate condition at the time of application attachment of the membrane to the substrate and workmanship during application. The performance of elastomeric roofing was discussed based on its advantages, disadvantages and limitations. Guidelines to assist the user in the selection and use of elastomeric roofing were prepared for both new and remedial roofing applications. Criteria were not available to evaluate or predict the performance of elastomeric roofing. As a first step in the development of criteria, preliminary performance characteristics were suggested.