As a construction and renovation expert with years of experience in various building projects, I can provide you with a detailed answer on how to put plaster over drywall.

Plastering over drywall is a process that can be done to improve the appearance of a room, add a layer of durability, or prepare the surface for painting. The process involves several steps, each of which is crucial to ensure a smooth and professional finish.

Step 1: Preparation
Before you begin plastering, it's important to prepare the drywall surface. This includes cleaning the wall to remove any dust, grease, or dirt that could prevent the plaster from adhering properly. If there are any cracks or holes in the drywall, these should be repaired first using a suitable filler.

Step 2: Priming the Wall
Once the wall is clean, the next step is to prime the wall. Priming is essential for creating a good bond between the drywall and the plaster. A special adhesive compound is painted onto the wall. This adhesive acts as a glue, ensuring that the plaster will stick to the wall effectively.

Step 3: Applying the Base Coat
After the wall has been primed, you can proceed to apply the base coat of plaster. This is a crucial step as the base coat provides a solid foundation for the final plaster layer. The base coat should be applied evenly using a trowel, ensuring that it covers the entire wall surface. It's important to let the base coat dry completely before moving on to the next step.

Step 4: Applying the Plaster Veneer
The plaster veneer, which can be blue or gray, is then applied over the base coat. This layer is typically thinner than the base coat and is what gives the wall its final appearance. The plaster veneer is applied using a technique that involves spreading the plaster evenly across the wall and then smoothing it out to achieve a smooth, even finish.

Step 5: Finishing the Plaster
Once the plaster veneer has been applied, it's time to finish it. This involves smoothing out any imperfections and ensuring that the plaster has a uniform texture. This is often done using a float, a tool designed specifically for smoothing plaster.

Step 6: Drying and Curing
After the plaster has been finished, it needs to dry and cure. This can take several days, depending on the thickness of the plaster and the environmental conditions. It's important not to rush this process, as allowing the plaster to dry and cure properly will result in a stronger and more durable finish.

Step 7: Painting or Decorating
Once the plaster has dried and cured, the final step is to paint or decorate the wall as desired. The plaster surface can be painted or wallpapered, depending on your preference.

In conclusion, plastering over drywall is a multi-step process that requires careful preparation, priming, application of the plaster, and finishing. By following these steps, you can achieve a professional and durable finish that will enhance the appearance of your room.

read more >>

Plaster veneer wallboard is blue or gray [1]. Plaster veneer may also be applied to ordinary drywall, or over existing walls, but this requires "gluing" the existing wall surface by painting on a special adhesive compound, and then applying a thin layer of "base coat" plaster.read more >>