M.Paul wrote:
It's done all the time. If the painted surface is exposed to the sun, it's
probably ready for a second coat within 30 minutes or less.

Sure fire way to end up with blistering and peeling because the paints
dries on the surface without allowing evap of solvent beneath. Should
never paint in hot sun for that reason. Instructions on paint labels
are usually there for a good reason.

wrote in message
oups.com...

We have contractors painting the exterior of our house. The primer is
on and they have begun putting on the final coat of the trim. The day
they put the trim on, they were here only 2-3 hrs. They claimed they
put 2 coats of paint on within that time frame. The can states to allow
4 hrs drying time between each coat. The painter stated that since it
was 90 degrees that day, the paint dryed quickly. Personally, it was 78
degrees that day. We are sure of this because we have been closely
watching the temperature. I want to make sure the preparation and
painting is done properly. Is it common practice and is it still
acceptable to put paint on so soon after the first coat? The last time
we had the house painted we were burned big time.