You can fix minor holes and tears in window screening with glue, an awl, metal thread and pre-manufactured patches. A fiberglass screen can be fixed by sewing a patch over the hole. Typically, you won't have to remove the screen window unit to make this repair.
Repairing a metal screen with a patch means removing the screen window unit to do so.
Tools and Materials
| Scissors | Large sewing needle | Metal snips |
| Small pieces of screening for patches |
Waterproof glue | |
Step 1. Repair holes in plastic or fiberglass screens by sewing a screen patch over the hole. Pull "threads" from the patch material. Small holes can sometimes be closed with waterproof glue. Use it sparingly, and wipe away any drips before the glue hardens. 
Step 2. For holes in metal mesh, pull cross threads from the patch's edges. Bend the wires, push them through the mesh around the hole, and crimp the ends. Smaller holes can often be fixed by reshaping the mesh with a toothpick or a straightened paper clip. 