Abstract: A release composition which facilitates the unmolding of bonding materials such as concretes from molds for purposes of pre-fabrication. Methods for facilitating the unmolding of such bonding materials by coating the mold with such release composition, and for casting molded, preformed articles include coating the mold prior to casting in order to facilitate the unmolding operations. The release composition is an aqueous anti-freeze solution containing no petroleum based products. It comprises a combination of at least one active release constituent which may be an organic acid salt, at least one clarifying anti-freeze agent which may be a hydroxyethylether; at least one spreading agent which is an ester; at least one polyether lubricating agent; and water as a solvent medium, in variable proportion according to the desired concentration.