• Steps:

    1 Protect walls and floors in the repair area with plastic drop cloths; use painter's tape to hold the drop cloths in place.
    2 Use a 3/16-inch carbide-tipped masonry drill bit to bore holes through the plaster, but not through the wooden lath. Drill evenly spaced holes—about every 3 inches—around damaged wall area.
    3 Clean dust from the holes with a wet/dry vacuum.
    4 Spray liquid conditioner into each hole; remove any conditioner that runs down the wall with a sponge.
    5 Trim the adhesive tube's nozzle with a utility knife. Then, inject adhesive into each hole by giving the caulking gun's trigger one full squeeze.
    6 Immediately after squeezing adhesive into the holes, use a drill/driver to screw a plaster ring into as many holes as necessary to pull the plaster tight against the lath.
    7 Allow the adhesive to dry, then use the drill to remove all the screws and plastic rings. If necessary, scrape the rings from the wall with a putty knife.
    8 Scrape off any high points of adhesive with the 6-in. putty knife
    9 Apply a thin coat of joint compound to the wall using the putty knife.
    10 Let the compound dry overnight, sand the surface lightly with 120-grit sandpaper, then apply a second, thinner compound coat.
    11 Prime and paint the wall.
    See products and services from this episode.
    • 4 to 6 hours on average
    • $80 to repair 30 square feet of loose plaster
    • Difficulty: Easy to moderate
      Somewhat easy to moderate, depending on the size of the repair.
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      Video Directory

      Selected Topic/Section

      Tools List

      • drill
        Drill/driver, used to drill holes, and drive and remove screws

      • Drill bit
        3/16-inch masonry drill bit, for boring holes through plaster

      • shop vacuum
        Wet/dry vacuum

      • caulk gun
        Caulking gun, used to apply plaster adhesive

      • putty knife
        6-inch putty knife, used to apply joint compound

      • plaster hawk
        Drywall hawk, for holding joint compound

      • utility knife
        Utility knife, used to trim adhesive nozzle

      • paintroller
        Paint roller and tray

      Shopping List

      1. Plastic drop cloth, for protecting wall and floor

      2. Painter's tape, used to hold drop cloth in place

      3. Plaster repair rings with 1 5/8-inch drywall screws

      4. Spray conditioner, used to treat plaster holes prior to applying adhesive

      5. Plaster adhesive, used to adhere loose plaster to lath inside walls 6. Sponge, for wiping up excess conditioner

      7. Joint compound, used to cover cracks and holes in wall

      8. 120-grit sandpaper, used to smooth dried joint compound

      9. Primer and paint