Weathering of Roofing Materials-An Overview

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An overview of several aspects of the weathering of roofing materials is presented. Degradation of materials initiated by ultraviolet radiation is discussed for plastics used in roofing, as well as wood and asphalt. Elevated temperatures accelerate many deleterious chemical reactions and hasten diffusion of material components. Effects of moisture include decay of wood, acceleration of corrosion of metals, staining of clay, and freeze-thaw damage. Soiling of roofing materials causes objectionable stains and reduces the solar reflectance of reflective materials. (Soiling of non-reflective materials can also increase solar reflectance.) Soiling can be attributed to biological growth (e.g., cyanobacteria, fungi, algae), deposits ... continued below

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Berdahl, Paul; Akbari, Hashem; Levinson, Ronnen & Miller, William A. March 30, 2006.

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Description

An overview of several aspects of the weathering of roofing materials is presented. Degradation of materials initiated by ultraviolet radiation is discussed for plastics used in roofing, as well as wood and asphalt. Elevated temperatures accelerate many deleterious chemical reactions and hasten diffusion of material components. Effects of moisture include decay of wood, acceleration of corrosion of metals, staining of clay, and freeze-thaw damage. Soiling of roofing materials causes objectionable stains and reduces the solar reflectance of reflective materials. (Soiling of non-reflective materials can also increase solar reflectance.) Soiling can be attributed to biological growth (e.g., cyanobacteria, fungi, algae), deposits of organic and mineral particles, and to the accumulation of flyash, hydrocarbons and soot from combustion.

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  • Journal Name: Construction and Building Materials; Journal Volume: 22; Journal Issue: 4; Related Information: Journal Publication Date: 04/2008

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  • Report No.: LBNL--59724
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 929480
  • Archival Resource Key: ark:/67531/metadc895088

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  • March 30, 2006

Added to The UNT Digital Library

  • Sept. 27, 2016, 1:39 a.m.

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  • Dec. 9, 2016, 10:10 p.m.

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Berdahl, Paul; Akbari, Hashem; Levinson, Ronnen & Miller, William A. Weathering of Roofing Materials-An Overview, article, March 30, 2006; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc895088/: accessed August 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.