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...
by David Ostrowski | Dec 20, 2013 | Problem Solver
DESCRIPTION Accumulation of dirt, dust particles, and/or other debris on the paint film. POSSIBLE CAUSES Exterior: soil splashing onto siding, air pollution, and car exhaust. Interior: air-borne dust and household dirt. SOLUTIONS Wash the surface; if it comes clean,...
by David Ostrowski | Dec 20, 2013 | Problem Solver
DESCRIPTION Wood with the appearance of severe mildew but will not lighten when tested with bleach. Darkening and decaying wood generally has a more solid, consistent appearance. POSSIBLE CAUSES Darkening of wood is caused by ultraviolet radiation. This can take place...
by David Ostrowski | Dec 20, 2013 | Problem Solver
DESCRIPTION Thin, long, relatively straight cracks running in a singular direction on a previously stained wood surface. POSSIBLE CAUSES The most common surface to show this failure is rough-sawn plywood, shakes, and shingles that have been stained with a...
by David Ostrowski | Dec 20, 2013 | Problem Solver
DESCRIPTION The splitting of a dry paint film through at least one coat. In its early stages, the problem appears as hairline cracks; in its later stages, flaking occurs. POSSIBLE CAUSES Use of a paint that has lower adhesion and flexibility properties. Over-thinning...
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