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Is entrained air detrimental to coating performance?

April 26, 2017air Coating detrimental entrained PERFORMANCE

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Is entrained air detrimental to coating performance?

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Yes. Air entrainment is very detrimental to coating performance. Coating specifications listed in product data sheets are based on the performance of a coating film that is free of air voids. Since air voids do not block UV radiation from the sun, and have no mechanical or water retarder properties, the properties predicted by the data sheet will not be realized. The coating will not block the UV portion of the sunlight or block water intrusion or tolerate expansion and contraction as well as an air void free membrane.