Why Do Cracks Appear in Cement Mortar Plaster Walls


Why Do Cracks Appear in Cement Mortar Plaster Walls?

Cracks can appear in cement mortar plaster walls for various reasons, including:

  1. Poor workmanship: If the plastering work is not done properly, it can lead to cracks in the wall. This can include inadequate preparation of the surface, improper mixing of the mortar, or uneven application of the plaster.
  2. Settlement: If the building is not properly constructed or the foundation is unstable, it can lead to settlement and movement of the walls. This can cause cracks to appear in the plaster over time.
  3. Expansion and contraction: Cement mortar plaster walls can expand and contract due to changes in temperature and humidity. This can cause the plaster to crack if it is not able to accommodate the movement.
  4. Moisture: If moisture enters the plaster, it can weaken the bond between the plaster and the surface, leading to cracks.
  5. Structural movement: If there are structural changes to the building, such as shifting of the foundation, it can cause cracks in the plaster.

To prevent cracks from appearing in cement mortar plaster walls, it is important to ensure that the plastering work is done properly, and that the surface is prepared adequately before the plaster is applied. It is also important to monitor the building for signs of settlement or structural movement and address these issues promptly. Proper maintenance of the building’s exterior, including proper drainage and waterproofing measures, can also help prevent moisture from entering the plaster and causing cracks.

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