Repair the PlasterRepair shallow surface damage using several thin coats of joint compound to fill in the missing plaster and level out the wall. Mix a small amount of compound and use a flexible joint knife to apply a first coat. May 1, 2019 - Here is a step-by-step guide to how to fix plaster ceilings in your old house. . they can take only so many water leaks and structural movements before . it's possible to repair and rescue plaster ceilings from further damage. With drywall, that place is often a seam between the ceiling's panels. If the ceiling is plaster, the water usually just builds up until it saturates the surface enough . Aug 6, 2019 - Water damage of less than around 4 inches across is usually safe to repair yourself. For anything larger, consult a professional. To repair damage in plaster, first let the ceiling dry completely, scrape off damaged material with a putty knife, then clean the area with a damp cloth. Demonstration how to repair water damage to a plaster ceiling. Plaster Ceiling RepairRepairing Plaster WallsRepair CeilingsPlaster RepairDiy PlasterDrywall . Mar 6, 2015 - Since the water problem is no longer an issue, can we simply repaint the ceilings or should we first repair any underlying plaster damage? Plaster is a hard and durable material, but when it gets wet it crumbles easily. Fixing a water damaged plaster ceiling can be a little more involved than fixing a . Repairing ceiling water damage, whether it is the result of a broken pipe or . of whether it is made of drywall, plaster, or some other material, no ceiling can be .