I restored some outdoor blinds, put on a couple of primer coats and handed them to the owners. They finished them with a waterbourne outside paint last summer, but they had enormous problems applying the finish. It didn’t take a minute for the finish to become tack free.
Is it possible to slow down the drying process of waterbourne paint ?
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It depends a lot on the paint--some have additives that slow the drying somewhat--but water, which is just the carrier for the paint, still evaporates at it's own rate. High temperatures and low humidity make the process pretty quick. Definately to the work out of the sun.
Can you be more specific about what paint and how and when they tried applying it?
They applied it during a hottish summer day, my guess it would have been around 30° C, well that's hot around here... I did tell them to wait until it was cooler, and not in direct sunlight, but i can't keep my eye on them all the time though... I don't know if they added more water, as this would speed up evaporating i guess.
It's an kind of home brand of a better known national paint shop/brand. Next sunday i'll see them and i'll try to get as much info i can.
Contact the technical department of the paint formulator.
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