Exterior Paint Problems
Patterned cracking in the surface of the paint film
resembling the regular scales of an alligator...
Blistering is the formation of bubbles
resulting from localized loss of adhesion and lifting of
the paint film from the underlying surface...
Run-down: The washing down of chalk from an excessively
eroding paint onto another area below (a brick foundation,
for example), ruining its appearance...
Formation of fine powder on the surface of
the paint film during weathering, which can cause color
fading. Although some degree of chalking is a normal,
desirable way for a paint film to wear, excessive film
erosion can result in heavy chalking...
The splitting of a dry paint film through at
least one coat, which will lead to complete failure of the
paint. Early on, the problem appears as hairline cracks;
later, flaking of paint chips occurs...
Accumulation of dirt, dust particles and/or
other debris on the paint film; may resemble mildew...
Efflorescence - Mottling
Efflorescence is the
formation of crusty, white salt deposits, leached from
mortar or masonry
as water passes through it...
Fading-Poor Color Retention
excessive lightening of the paint color, which often
occurs on surfaces with sunny southern exposure.
Fading/poor color retention can also be a result of
chalking of the coating...
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 light tints. On masonry,
it can be mistaken for efflorescence see Efflorescence and
Appearance of a denser color or higher gloss where wet
and dry layers overlap during paint application...
Mildew is the formation of brown, black or gray spots or
blotches on the surface of paint or caulk due to the
presence of fungi that feed on the paint film and other
Reddish-brown stains on the paint surface...
Loss of adhesion where many old coats
of alkyd or oil-based paint receive a latex top coat...
Spontaneous loss of ribbons or sheets of paint due to
loss of adhesion. When the surface is coated with a primer
and topcoat, or with several coats of paint, the peeling
may involve all the coats, some of them, or just the
Poor Galvanized Metal Adhesion
Paint that has lost its
adhesion to a galvanized metal substrate...
Poor Alkali Resistance
Color loss and overall
deterioration of paint film on fresh masonry...
Poor Gloss Retention
Deterioration of the paint film,
resulting in excessive or rapid loss of luster of the top
Concentration of water-soluble
ingredients on latex paint, creating a blotchy, sometimes
glossy appearance, often with a tan or brownish cast. More
likely with tinted paints than with white or factory-colored
Brownish or tan discoloration on the paint
surface due to migration of tannins from the substrate
through the paint film. Typically occurs on "staining
woods", such as redwood, cedar and mahogany, or over
painted knots in certain other wood species...
Vinyl Siding Warp
Warping or buckling of vinyl siding
panels that have been repainted...
Stains that come from waxy substances in the
reconstituted wood products used to make hardboard siding.
When the substrate is painted, these staining substances
bleed through the paint; they can even bleed through some
ordinary primers, possibly causing dirt pickup, mildew
and/or poor paint adhesion...
A rough, crinkled paint surface, which
occurs when uncured paint forms a "skin"...