- Author
- Busching, H. W. | Mathey, R. G. | Rossiter, W. J. | Cullen, W. C.
- Title
- Effects of Moisture in Built-Up Roofing: A State-of-the-Art Literature Survey. Final Report.
- Coporate
- National Bureau of Standards, Washington, DC
- Sponsor
- Naval Construction Battalion Center, Port Hueneme, CA Department of the Air Force, Washington, DC
- Report
- NBS TN 965, July 1978,
- Distribution
- Available from National Technical Information Service
- Keywords
- buildings; roofing; moisture; roofs; heat loss; nondestructive tests; radiation measuring instruments; gravimetric analysis; capacitive reactance; thermography; electrical resistance; microwave equipment; bibliographies | nondestructive tests | capacitance
- Identifiers
- roofing materials
- Abstract
- A literature review of the effects of moisture on built-up roofing was made. Quantitative data were summarized for some properties of membrane roofing including: permeability, absorption, thermal expansion, thermal resistance, tensile strength, modulus, and fungus attack resistance. Example calculations of possible temperature and moisture gradients for two typical roof sections were presented. Nondestructive evaluative methods to locate moisture in roofing systems were summarized and include gravimetric, nuclear, capacitance, infrared imagery, electrical resistance, and microwave methods. A review of techniques to dissipate moisture in roofing is presented.