If a landlord can't get in, the individual window glass itself does not get blackened on the outside, unless opaque film is applied (most landlords do not take the time/expense to do this, and longevity is an issue). Usually a single panel of something is put over all the frame/sash area -crude, but effective.
Register for free to join our community of investors and share your ideas. You will also get access to streaming quotes, interactive charts, trades, portfolio, live options flow and more tools.