Building a Greenhouse Using Old Windows Continued

With the framing in place, it is time to install the windows. To help increase heat retention during the winter, I paired the windows to create something like double pane windows. The front took 18 windows with a thin layer of insulating foam in between. My measurements were almost perfect except for two windows that had to be forced into the space. On the greenhouse end, we had to use one odd three light window to complete the wall. We didn't have enough of the 3 light windows to do the whole wall so we have a mix but that looks ok to me.