![]() If the separation is slight-say, between 1/4″ and 1/2″-good reattachment is likely because the plaster will usually push back into place solid and flat against the lath. ![]() Instead, just gently encourage the plaster with the flat of your hand. Do not force it back into place or more plaster may break. If there are broken keys or debris in the way, the plaster will resist seating, and it will feel and sound “crunchy” akin to breaking eggshells or crushing popcorn. Hopefully, you will feel it move back into place like a jigsaw puzzle piece sliding into its own unique spot. Gently push on the surface and judge the amount of play between plaster and lath. Stained cracks and suspicious shadows-the telltale signs of a delaminating plaster ceiling.Īfter correcting whatever problem made the ceiling loose in the first place (leaky roof, structural alterations), the first step is to assess how far the ceiling has pulled away. With these methods and good tool skills it’s possible to restore the integrity of plaster ceilings for many more years of service. Though variations of this technique are not new–texts from the 1920s recommend liquid sulfur as an adhesive–we use modern materials that are easy to handle and inflict minimal damage to sound plaster. ![]() We have successfully reattached many old ceilings by injecting adhesive between the plaster and lath where the keys (anchors) have broken away over time. The good news is, it’s possible to repair and rescue plaster ceilings from further damage.
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