Get matched with top plaster repair specialists in Ashley, ND

The short answer is yes, a sagging plaster ceiling is dangerous. Sagging plaster on a wall is something you should fix immediately, but it isn’t a major concern. If the same type of sagging occurs on a ceiling, however, you could be in danger of your ceiling falling in large chunks. When plaster sags, it loses its strength and ability to hold itself up. The bonds that hold it together are strong, though, so if a sagging area falls, it will take large pieces down with it.

The tool you use to sand plaster will depend on the size of the project. If you’re just working on a small section of your wall to get rid of an uneven spot on the surface, hand-sanding might work. However, for larger projects, a drywall sander can make a huge difference when it comes to both time and elbow grease—and an orbital sander can help for detailed areas such as around ceiling fans.

Smaller is better when patching holes with spackle. Any holes wider than four to six inches in diameter tend to be too wide to repair with spackle alone. You'll likely want to patch bigger holes with a drywall panel. 

Even holes measuring up to 6 inches may be challenging to fill with spackle alone. For best results, purchase a wall repair patch made from wire mesh. Cut the patch to fit over the hole, then use the spackle to hold it in place. Apply the spackle over the patch as you would for a smaller hole.

Plaster walls typically last between 30 and 70 years, but depending on the quality of the materials and the moisture levels in the building, they can last for over 100 years. With expert application and consistent maintenance, plaster can even last for centuries. To extend its lifespan, it is important to have the plaster professionally installed, address any water damage promptly, and repair small cracks as they appear. Regular inspections by a professional can help identify and address concerning cracks before they become significant issues.