how does humidity effect exterior paint?
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What Happens to Exterior Latex Paint, if applied during high humidity or rainy conditions? http://paintingamericainc.com/2013/happens-exterior-latex-paint-applied-high-humidity-rainy-conditions/TRANSCRIPT
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What Happens to Exterior Latex Paint, if applied during
high humidity or rainy conditions?
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Contractor
Water evaporation is the first step of the drying process. High moisture present in the air during application or shortly after inhibits the evaporation process.
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The next factor is coalescent solvents which soften the binder particles and
glue them to the pigment particle.
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If the said solvents evaporate before the water does, then the paint film is
laden with water.
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This inhibits proper paint film formation, leading to paint failure; blistering, loss
of gloss, or can simply run off the substrate.
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Contractor
Surfactant Leaching is the most common effect seen when latex paint is applied during times of high humidity.
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Surfactants are the ingredient in paint that keep the colorants stable and
helps with surface tension from a liquid to a solid.
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This leaching will cause a clear wax like substance or a colorant run out, down
the siding of your home.
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Contractor
Painting America, Inc. paints exteriors in the correct weather conditions, during July, August and as far into September as weather will permit.
Call us today at
425-488-1192
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PaintingAmericaInc.com