Get matched with top plaster repair specialists in Patchogue, NY

Plaster ceilings can sag for several reasons. In some cases, the plaster and other building materials shift and come apart over time, which is why you’ll commonly find drooping plaster ceilings in older homes. Improper installation, foot traffic, and water damage—often from a leaky roof or a broken pipe—can also cause plaster ceilings to sag.

Venetian plaster is a highly durable wall finish that becomes a rock-like substance once dried, making it last longer than most other wall finishes. Its lifespan can range from decades to centuries, potentially lasting a lifetime. Key factors influencing its longevity include the quality of the initial application, whether it's properly sealed against moisture, and how the wall is maintained and treated (e.g., how often it is touched or bumped). Due to its mineral content, it can also develop a patina over time.

You can put certain types of plaster over other types, but doing so isn't always the best idea. For example, putting a coat of gypsum over lime plaster is possible, but doing so will limit the lime plaster's breathability and potentially affect its performance.

Since cement plaster tends to leave a textured surface, no matter how much you smooth it, some people prefer to use gypsum plaster as a topcoat over cement plaster, creating a smoother surface.

Plaster repair costs range from $4 to $10 per square foot for refinishing, while skim coating can be less expensive, usually between $2 and $5 per square foot. The price you pay for plaster repairs will depend on the extent of the damage, the type of plaster you have on your walls, and the accessibility of the damage. Plaster repair on the exterior of your home tends to be more expensive, as there’s a higher chance that ladders or scaffolding will be necessary to carry out the repair.