Well ;
Now that is an interesting question . For the answer lets go to the Doc . " Doc , Does paint freeze in the mail ? " " Well , as you know older paint used to be Of a type made from Oil . Now , yes , that can freeze . After about 12 to 14 days in subzero temperatures ."
" Now these newfangled water - based Acrylics certainly do ". " It only takes two days at temps below freezing for them to get as hard as a rock ".
No really , If your paint has frozen it will be grainy and unusable . Especially if it's acrylic ! T.B.