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Paint failures can generally be attributed to the fact that the painting was done on a damp surface, the quality of the paint was not good, or the paint was not applied properly. Here are a few common types of paint failures and their chief causes. CheckingThese small, hairline cracks on the surface of the paint indicate that the first coat was too soft to support the finish coat. As these cracks are only in the finish coat, they can be sanded and a new coat applied. AlligatoringThis condition resembles checking except that the cracks are bigger and run deeper. This state of affairs is due to the application of the final coat before the previous coat is completely dry, or to an error in mixing, causing the undercoat not to dry hard. Do not attempt to repaint a surface in this condition. The old paint must be removed and a completely new job done. ScalingScaling is the result of moisture penetrating cracks in the paint. It can be caused by poor quality paint or by improper mixing, so that the paint is not elastic enough to withstand the constant expansion and contraction of the wood with temperature changes. Paint in this condition should be removed. PeelingPeeling starts with blisters and occurs when paint is applied to a damp surface, or when moisture penetrates beneath the paint from the opposite side of a surface, such as an outside wall. This paint should be removed.
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