Step 2: Stabilize the Wall's Edge

Stabilize the Wall's Edge to repair plaster
Photo: Ben Stechschulte
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Using a 3/16-inch masonry bit, drill holes every 3 inches around the damaged area, about 1 inch from the edge. Drill until the bit hits the lath. If it misses, pencil a mark by that hole. Vacuum the holes and spray them with plaster conditioner. Wait 15 minutes, then fill all unmarked holes with a squirt of plaster adhesive. Wipe off the excess with a damp rag.
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    Tools List

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    • drill
      Drill/driver
    • 1/8-inch drill bit
      ⅛-inch drill bit
    • 3/16 masonry bit
      3/16-inch masonry bit
    • wetdry vac
      Wet/dry vac
    • caulk gun
      Caulk gun
    • cleaning rag
      Rag
    • small plastic bucket
      Mixing bucket
    • margin trowel
      Margin trowel
      • to mix and apply plaster
    • plaster trowel
      Plastering trowel
      • to spread and smooth plaster
    • notched trowel
      Scarifier
    • six-inch taping knife
      6-inch taping knife
    • grout sponge
      Sponge

    Shopping List

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    Wood lath
    1-inch drywall screws
    Plaster conditionerPlaster adhesive
    Patching plaster
    Ready-mix joint compound