[header] How to repair a tear in a window screen [title] Purchase clear nail polish from a local store. [step] After drying, nail polish works as a strong adhesive for small holes. Use nail polish on minor repairs if your tear isn't significantly gaping. 
Choose clear polish to make the adhesive as unnoticeable as possible. [substeps] If your screen is tinted, you can use a darker polish (like gray or black).