How to Fix Drywall Corner Bead Cracks

Scrape off any loose pieces of drywall and drywall mud from the corner bead with a utility knife.

Push on the corner bead to check for loose areas. Staple or nail the corner bead to the studs in areas that flex.

Prime the corner bead with a stain-blocking primer and allow to fully dry.

Press fiberglass mesh tape into place over the corner bead. Allow the mesh tape to overlap onto the drywall.

Use a 6-inch taping knife and apply a heavy coat of drywall joint compound over the mesh tape. Allow to dry and follow with a second and third coat of drywall joint compound using an 8-inch taping knife.

Sand the area smooth with a drywall sanding block. Texture the repaired area to match the surrounding texture.

Prime and paint the area to match the wall color.