Roof Leaked And Niw My Ceiling Plaster Is Cracked

Delaminating cracks these cracks are a sign of plaster pulling away from the lath behind it.

Roof leaked and niw my ceiling plaster is cracked.

In addition water damage from roof or plumbing leaks can discolor plaster and cause peeling or efflorescence the leaching of salts and minerals to the surface. When plaster begins to pull away from the lath there is a chance it may fall away from the wall or ceiling and come crashing down. The jointing compound will cover the tape and be reinforced by the tape. Typically plaster ceiling cracks have two causes.

Some plaster is of poor quality and this may cause the plaster to crack and crumble. While unattractive cracks in your ceiling usually aren t a cause for alarm unless they accompany other problems such as blackened drywall or a known leak. Large cracks and a bowed ceiling. These show up on both ceilings and walls but can be the most dangerous on ceilings.

If your ceilings are plastered cracks are often attributable to weathering of the plaster. Ceiling cracks in plaster ceilings. If the crack is between drywall sheets along ceiling joists then use drywall screws to hold the two sheets of plasterboard immobile and approximately level with each other. Small cracks can be repaired by applying plaster.

House settling and temperature or moisture fluctuations in an attic which result in the expansion or contraction of framing members. Lay drywall jointing compound along the crack on top of the tape.