How to Replace Rusted Corner Beads

Corner beads are used to protect outer angles of intersecting drywall walls. They are metal strips placed on the corners before plastering. However, with the passage of time they rust. You can replace them by first removing stucco and the old corner beads. Then install the new corner bead and reapply stucco.

Things Required:

– Marker
– Chisel or hammer
– Stucco mud
– Corner Beads
– Screw
– Stucco stop
– Carpenter’s square


  • 1

    Measure the width of the corner bead

    First of all you need to determine the width of the corner bead. You need to take measurements from both sides and then mark it with a marker. This is to determine from where to rub off stucco.

  • 2

    Chip off the old stucco

    After marking the width of the corner beads on both sides, you need to rub off the stucco till the markings. You can do this with help from a hammer or a chisel.

    This process is messy so lay a sheet or tarp underneath the area. This will help you get rid of the mess easily.

  • 3

    Remove the old corner bead

    You should get rid of all the unwanted stucco until the area is clear. After this, you need to remove the old corner bead.

  • 4

    Apply the new corner bead

    After getting rid of the old corner bead, install the new corner bead. You should first measure the area and then cut the new corner bead to the appropriate size. Remember to use non corrosive nails to fix the new corner bead.

  • 5

    Apply stucco stop

    Next measure the area for stucco stops and then cut it to the appropriate size as well. Then place it with the help from adhesive or glue.

    Remember that it should align with the lines you marked earlier. You can check this by using a carpenter’s square.

    Later, hammer nail into the stucco stop.

  • 6

    Apply the Stucco mud

    After applying stucco stop, you need to apply the stucco mud. After applying first coat, leave it to dry for hours. Then apply the second coat which is the finishing coat. After applying the finishing coat, use a damp float to smooth the surface.

    Remember that there should be no paint on the surface where you are applying the stucco mud.

  • 7

    Look for rusted nails

    In the end you need to check out for the nails whether are rusted or not. In some cases, even if you drill new screws, they will rust as rust is in that wood. Thus you need to use noncorrosive fasteners.

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