Of course, if the main goal is to separate different temperature zones, building walls and doors can get the job done as well, but one advantage of using insulated curtains is that they are an impermanent solution. Over time, your needs for the workspace may change or shift around, and because the curtains can be moved around, changing how they work for your space is not as involved as it would be to get rid of or move walls and doors. Impermanence may not always be seen as a positive thing; however, in the case of insulated curtains, it often is.