Advice and guidance sought on exterior painting at temps below 50 F
(10 C).

I am having new pre-primed acrylic double-hung wood on wood windows
installed in Nov. As the windows are custom, heavy, and the grass can
break easily the installers insist the exterior painting occur after
installation.

I see some acrylic paints advertised on the Internet, which can be
applied on dry days with temperatures above 35 F. I am
interested in any experience or advice on use of these or other paints
for this application.