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ATMOSPHERIC ACID DEPOSITION DAMAGE TO PAINTS
Citation:
Haynie, F. ATMOSPHERIC ACID DEPOSITION DAMAGE TO PAINTS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/M-85/019 (NTIS PB87224333).
Description:
Available data from laboratory and field studies of damage to paints by erosion have been analyzed to develop an atmospheric acid deposition damage function for exterior house paints containing calcium carbonate or silicate extenders. Regression analysis coefficients associated with sulfur dioxide levels are consistent with the reaction between the SO2 and calcium carbonate to form soluble calcium sulfate. The effect of sulfuric acid in rain on paint is expected to behave similarly. Observed actual household painting frequencies prior to 1970 are consistent with the damage functions calculated from the experimental erosion data obtained in the 1950's, 1960's and early 1970's. Changes in both environmental conditions and types of paints that are marketed make it necessary to make assumptions when using the damage functions to estimate costs associated with repainting.