In article ,
"Don Phillipson" wrote:

On Sep 16, 11:45 pm, Artful Dodger wrote:
I had the wood-framed windows on the West side redone recently by a
professional painter. . . .
Here's my q: He advised wiping dew/condensation off the window sills
every morning to avoid
deteriorating the new job. (This is So. Calif coastal).

I don't understand why that is necessary, though I will do it if this
distinguished body so advises.
My thought was that the dew/condensation will evaporate anyhow when
the sun hits it.

The point is that before the dew evaporates it
collects in individual droplets (present for an hour
or two) and the sunshine affects the paint surface
differently, (a) shining directly on a dry surface
(b) shining through a bead of water like a magnifying
lens. This can cause the paint to appear mottled.

That's ridiculous. Nobody goes outside to dry off their house every
morning. And if they do, they should be shot, or committed. What kind of
****ty exterior paint can't stand up to water?