If you need something that will last longer than just a few months like if you're going on vacation, then you should consider getting some of the 3M Security Film instead of just using something temporary like duct tape or masking tape. These will hold up much better over time so they'll still be usable when you return home again next month!
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All Spec Sun Control Window Film is a unique combination of film, adhesive and protective overlaminates that allows you to enjoy natural light while reducing heat gain, glare, and UV damage. 3M™ Window Films provide a decorative way to meet energy consumption goals --reduce cooling costs and increase comfort in buildings.
https://allspecsuncontrol.com/....3m-prestige-window-f