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Most paint problems or mistakes can be corrected once you know what caused it. Below are some of the most common exterior paint problems that can occur and tips on how to correct them.
Patterned cracking in the surface of the paint film resembling the regular scales of an alligator.
Bubbles resulting from localized loss of adhesion, and lifting of the paint film from the underlying surface.
Formation of fine powder on the surface of the paint film during weathering which can cause color fading.
The washing down of chalk from an excessively eroding paint onto another area below (a brick foundation, for example), ruining its appearance.
The splitting of a dry paint film through at least one coat, which will lead to complete failure of the paint.
Accumulation of dirt, dust particles and/or other debris on the paint film; may resemble mildew.
Crusty, white salt deposits, leached from mortar or masonry as water passes through it.
Premature and/or excessive lightening of the paint color, which often occurs on surfaces with sunny southern exposure.
A white, salt-like substance on the paint surface. Frosting can occur on any paint color, but it is less noticeable on white paint or lighter tints.
Appearance of a denser color or ligher gloss where wet and dry layers overlap during paint application.
Black, gray or brown areas of fungus growth on the surface of the paint or caulk.
Reddish-brown stains and spots on the paint surface.
Loss of adhesion where many old coats of alkyd or oil-based paint receive a latex top coat.
Loss of paint due to poor adhesion. Where there is a primer and top coat, or multiple coats of paint, peeling may involve some or all coats.
Color loss and overall deterioration of paint film on fresh masonry.
Paint that has lost its adhesion to a galvanized metal substrate.
Deterioration of the paint film, resulting in execessive or rapid loss of luster of the top coat.
Concentration of water-soluble ingredients on latex paint, creating a blotchy, sometimes glossy appearance, often with a tan or brownish cast.
Brownish or tan discoloration on the paint surface due to migration of tannins from the substrate through the paint film.
Warping or buckling of vinyl siding panels that have been repainted.
Stains that come from a waxy substance in the reconstituted wood products used to make hardboard siding.
A rough, crinkled paint surface occurring when paint forms a "skin."
Note: Images & information provided by The Rohm & Hass Paint Quality Institute.