What are the reasons for cracks in cement mortar plastering?
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An analysis: Reasons for cracks in cement mortar plastering in decoration
There are several reasons for cracks in cement plastering: 1. Insufficient soaking of the original surface, leading to delamination; 2. An overly thin layer of fresh plaster, causing rapid drying; 3. Applying too thick a layer of plaster at once, resulting in uneven dehydration; 4. Excessive cement content, causing rapid water release; 5. Inadequate preparation of the original surface before applying plaster; 6. Expired cement or cement with an insufficient/too high grade. There are no other causes besides these six. The first five are related to human error, while the sixth is related to the quality of the materials. It’s important to keep in mind that the methods used for the ceiling differ from those used for interior surfaces.
Additional notes: 1. Climate impact 2. Corrosion by external chemicals