McPherson Quality Painting and Water Proofing
Surfactant leaching causes blotchy, sometimes glossy, tan or brownish spots to appear on the surface of latex paints.
Surfactants are necessary in making paint. They evaporate and are not part of the paint film, their appearance does not harm it in any way. In most cases, the leaching occurs slowly and is washed away by weathering before even being noticed.
· Painting in cool, humid conditions or just before it occurs, such as late afternoon or just before or right after rain. The longer drying times allows the paints water-soluble ingredients-which would normally evaporate, or be leached out by rain or dew - to rise to the surface before the paint thoroughly dries.
· Mist, dew or other moisture drying on the painted surface shortly after it has dried.
Do not paint if temperatures are below 50° or in the late afternoons if cool, damp conditions are expected in the evening or overnight.
If the surfactant leaching occurs in the first day or so after the paint is applied, the blotches or stains can usually be rinsed off with a strong stream of water from a garden hose. A month or so of weathering will remove even the more stubborn cases of leaching. Surfactant leaching should not affect the ultimate durability of the coating.
THANK YOU FOR VISITING.
Photos - just completed Victorian and other job sites
Paint Problems and Solutions:
Peeling from wood
Tips for the "do it yourself"
Quality paint vs.ordinary paint
How to estimate paint quantities
Selecting the right sheen
Window painting made easy
Low Odor Paint Article
If you have a project in the Bay Area and would like to receive a FREE estimate, Call Mike at 707-542-8254
McPherson Quality Painting and
Water Proofing Copyright 1983-2012
All Rights Reserved.