by David Ostrowski | Jan 11, 2014 | Problem Solver
DESCRIPTION Black, gray, green, or brown spots on any surface. Paint does not cause mildew. POSSIBLE CAUSES Mildew forms on interior and exterior surfaces that tend to be damp or receive little or no direct sunlight. Painting over a substrate (e.g. the surface that...
by David Ostrowski | Jan 11, 2014 | Problem Solver
DESCRIPTION Appearance of a darker/denser color or higher sheen where two layers overlap during paint application. POSSIBLE CAUSES Failure to maintain a “wet edge” when painting. Essentially, some areas are receiving 2 coats. Painting on an unsealed...
by David Ostrowski | Jan 11, 2014 | Problem Solver
DESCRIPTION A white, salt-like substance on the paint surface. On masonry, it can be mistaken for efflorescence. POSSIBLE CAUSES Frosting forms in areas that are protected from the cleansing action of rainfall. The crystals form when the paint is exposed to excessive...
by David Ostrowski | Jan 11, 2014 | Problem Solver
DESCRIPTION The lifting of paint from the underlying surface in the form of flakes. Flaking is generally preceded by cracking or checking, and will occur over different surfaces. POSSIBLE CAUSES Cracking of exterior wood and plywood as it expands and contracts in...
by David Ostrowski | Jan 11, 2014 | Problem Solver
DESCRIPTION Premature and/or excessive lightening of the paint color, which can occur on surfaces with sunny exposures. This is relatively easy to see because hidden areas such as eaves will not usually fade. Fading/poor color retention can also be a result of...
by David Ostrowski | Dec 21, 2013 | Problem Solver
DESCRIPTION Crusty, white salt deposits, which are leached to the surface of mortar or masonry as water passes through it. Efflorescence is often seen as a white fluffy deposit of salt crystals on cementitious (e.g. masonry) wall surfaces. Efflorescence depends on the...
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