For areas where the washers don’t hold or the plaster is very damaged, cut out the plaster and create a patch using drywall.Use a drywall screw with a plaster washer to re-secure the damaged sections of plaster to the lathe.Give us a call at 20 or online for drywall and plaster repair service in the Star, Caldwell, Eagle, Kuna, Boise, Nampa, and Meridian, ID areas. For areas where there is no structure above, attach a piece of strapping perpendicular to the others and insert filler pieces of strapping in the gaps between the strapping. We have the experience needed to patch and repair lath and plaster walls and ceilings and you can be confident that we will do the job right the first time.Repeat this process several times in the area of the cracks. Allow to cure for 24 to 48 hours before applying the finish coat.
Keep the brown coat at least 18 below the level as it begins to set up. Use a drill/driver to secure a piece of 1×3 strapping to the structure above the ceiling. Use the same plaster for the brown coat and apply it in much the same way: Prep the surface by generously dampening it with water before you begin.Cover the work area with drop cloths and work off of a rolling scaffolding platform, which can be rented or purchased.(Most lath is 1 wide, spaced apart, and laid horizontally on walls.) If there are existing damage holes extending down to the lath, drill 3/16 holes 1 away from the edge of the hole, around the perimeterone in every lath. One option is to cut out the damaged area and install a 3⁄8″ thick sheet of blue board and plaster. Step 1 Along the crack’s length, drill 3/16 holes on both sides, about 1 apart, in every other lath.Plaster mixed with horsehair or goat hair was then forced onto the lathe, forming a key that holds it to the lathe. When originally installed, wood lathe was nailed to the ceiling joists.Steps for patching a plaster and lathe ceiling: