An aqueous-based clear / cloud solution was developed using poly (vinyl methyl ether) and an antifreeze mixture of ethylene and propylene glycols. The solution has a controllable cloud point from 15 to 90-degrees-C, freeze protection to -46-degrees-C, and a density that prevents the precipitated polymer from settling and is fairly stable to UV degradation. A significantly smaller heat gain is achieved through the clear / cloud glazing when compared to a normal double-pane window.