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Practical Coverage

Last updated: February 13, 2019

What Does Practical Coverage Mean?

Practical coverage refers to the quantitative determination of the amount of paint required to protect a given metal substrate area against corrosion. Practical coverage calculations take into account variable losses in both the paint container and to the external atmosphere.

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Corrosionpedia Explains Practical Coverage

The practical coverage of a coating is calculated using the following formula or similar variations:

Practical Coverage = Theoretical Coverage x (1 - Loss Factor)

For example, when given the theoretical coverage of 100 square feet per gallon at a recommended dry film thickness and a loss factor of 30%, the practical coverage is determined as follows:

100 sq. ft./gal x (1 - 0.30) = 70 sq. ft. / gallon

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Preventative CoatingsPaints and Plastics CoatingsPhysical Property MeasurementCoatingsEngineering and Spec Writing

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