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The problem is when dampness obtains in between the surface as well as the paint movie. The paint film weakens when loss of gloss occurs.
Although, some level of chalking is a regular, desirable means for a paint film to use, too much movie disintegration can lead to hefty liquid chalking. Causes: (1) Usage of an interior paint for outside application; (2) Use of an alkyd based paint (oil). As a whole, alkyd based coatings will certainly chalk greater than their latex counterparts.
It relies on the presence of salt as well as wetness. The development of crystals will continue as long as both are existing. The salts exist in the mortar obstructs or concrete structure as well as the dampness is generally attributable to some building issue. When rising from mortar in block or block structures, efflorescence will look like slim bands representing mortar joints.
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Summary: Premature and/or excessive fading of the paint color, which commonly happens on exterior surfaces facing southerly and also western direct exposures. Reasons: (1) Colors will discolor slightly when subjected to intense sunlight; (2) Usage of a modified paint, leading to fast destruction (chalking) of the paint movie; (3) Use of paint colors that are susceptible to UV radiation, most significantly, lighter reds, yellows and oranges.
Tannin staining normally happens with "staining woods," such as redwood, cedar as well as mahogany, or over repainted knots in particular other timber species. Reasons: All timbers, yet specifically red-colored timbers, include a water soluble color called tannin.