How To Repair Plaster Ceiling Cracks

How to fix plaster ceilings.

How to repair plaster ceiling cracks. Subscribe to this old house. Small cracks in plaster are relatively easy to repair with one condition. Besides the normal wear and tear of living plaster and lath ceilings are at the mercy of gravity and they can take only so many water leaks and structural movements before they pull away from the framing. House settling and temperature or moisture fluctuations in an attic which result in the expansion or contraction of framing members.

Use mesh tape to cover the crack. If the plaster ceiling feels firmly attached to the lath then you can do the same repair as for the small cracks above. Ask this old house general contractor tom silva helps a homeowner repair a cracked plaster ceiling in an older home. Score the crack with a utility knife to remove any loose plaster or other material that may be inside the crack.

Screw plaster washers to ceiling along and around cracked area. What old house owner doesn t have a cracking or sagging plaster ceiling in need of repair somewhere. By using modern materials and a traditional technique it is possible to repair plaster ceilings that are cracking and delaminating. The plaster keys holding it to the underlying lath can also crack and break over time causing the plaster to partially separate from the wall.

Use trowel to spread joint compound onto ceiling covering the repaired area. Here is a step by step guide to how to fix plaster ceilings in your old house. For larger cracks you may need two coats of spackle because of its tendency to shrink as it dries in large gaps so double check before priming and painting. In this video this old house general contractor tom silva explains how to repair a plaster ceiling.

The plaster must be firmly anchored to the lath behind it. No matter what the cause you can repair the plaster cracks by using drywall tape and joint compound. Be sure to drive screws into wood lath above.