When using masonry walls as a plaster base, what is the minimum thickness for gypsum plaster?

In the context of plastering over masonry walls, the use of gypsum plaster requires adherence to specific thickness guidelines to ensure structural integrity and performance characteristics. A minimum thickness of 1/2 inch for gypsum plaster is specified for effective application over masonry surfaces. This thickness ensures that the plaster adheres well, provides adequate coverage, and helps in minimizing issues such as cracking that can arise from insufficient thickness.

Gypsum plaster that is too thin may not adequately bond to the masonry or provide the desired aesthetic and durability. This is particularly important in a construction context where the plaster serves both as a protective layer and a finished surface. By maintaining a minimum thickness of 1/2 inch, the plaster is allowed to perform optimally, effectively bridging any inconsistencies in the masonry substrate and contributing to a smooth, resilient surface.

Options with lesser thickness, such as 1/4 inch, would compromise the plaster's ability to adhere properly and function as intended, while significantly greater thicknesses, such as 3/4 inch or 1 inch, may not only be unnecessary but could also increase the risk of issues related to weight and drying. Therefore, establishing 1/2 inch as the minimum thickness strikes the right balance between performance and practicality in the use