And so, Levi will proceed to peel the windows out of their frames, first in the cabin they already partially demolished, and then he'll go looking for a few more, trying to make sure that they're uninhabited (he may or may not succeed with that, if anybody wants to find their windows gone...).

It will probably be evening by the time he finishes lugging the last (so far) window to the chosen greenhouse spot. Their frames are still intact, and by intersecting them with planks, he thinks they may be able to build something reasonably sturdy, depending how big it's supposed to be.