Key Differences Between Interior and Exterior Plastering


Key Differences Between Interior and Exterior Plastering

Key Differences Between Interior and Exterior Plastering 1

Interior Plastering

Interior plastering is a crucial aspect of any construction or remodeling project. It involves applying a layer of plaster to the interior walls and ceilings, creating a smooth and even finish. There are several key differences between interior and exterior plastering techniques and materials that should be considered when undertaking a project.

Key Differences Between Interior and Exterior Plastering 2

One of the major differences is the type of plaster used. Interior plastering typically involves the use of gypsum-based plaster, which is a material made from the mineral gypsum. Gypsum plaster is known for its excellent adhesion properties and is easy to work with. It provides a smooth and durable finish, making it ideal for interior surfaces.

Interior plastering is also focused on achieving a flawless surface for painting or wallpapering. The plaster is applied in multiple layers, with each layer being carefully smoothed and sanded to achieve a smooth and even finish. This meticulous process ensures that any imperfections in the wall or ceiling are hidden, creating a flawless surface for further decoration.

Exterior Plastering

Exterior plastering, also known as stucco, is designed to protect the exterior walls of a building from the elements. Unlike interior plastering, which focuses on aesthetics, exterior plastering is primarily concerned with providing a weatherproof barrier.

One of the main differences between interior and exterior plastering is the type of material used. Exterior plastering typically involves the use of cement-based stucco, which is much more durable and resistant to the elements. The cement acts as a binder, providing strength and durability to the plaster.

Exterior plastering also requires the application of a wire mesh or fiber reinforcement to enhance its strength and prevent cracking. The mesh or fiber is embedded within the layers of plaster, creating a strong and stable surface that can withstand the stresses caused by wind, rain, and temperature changes.

Application Techniques

The application techniques for interior and exterior plastering also differ significantly. When it comes to interior plastering, the plaster is typically applied by hand using a trowel. The plasterer carefully spreads the plaster onto the wall or ceiling, ensuring even coverage and a smooth finish.

In contrast, exterior plastering is often applied using a spray gun or a mechanical pump. This allows for quicker and more efficient application, especially for larger surfaces. The plaster is sprayed onto the wall or surface, and the plasterer then uses a trowel to even out the surface and create the desired texture.


Another important distinction between interior and exterior plastering is the range of finishes available. Interior plastering offers more versatility in terms of finishes, with options ranging from a smooth and polished surface to textured finishes, such as stucco or faux finishes. These different finishes allow homeowners to customize their interior spaces according to their preferences and design style.

On the other hand, exterior plastering typically involves a textured finish. This textured finish not only adds visual interest to the exterior walls but also helps to provide better resistance against moisture and other environmental factors. Common exterior plaster finishes include roughcast, pebble dash, and dash receiver, each offering a unique texture and aesthetic appeal.

Maintenance and Durability

While both interior and exterior plastering are designed to be durable, exterior plastering generally requires more maintenance due to its exposure to the elements. Exterior plaster may need to be repainted periodically to maintain its appearance and protect it from weather damage.

Interior plastering, on the other hand, is less prone to damage and typically only requires minor touch-ups or repairs over time. The interior environment provides better protection against weather-related wear and tear, allowing interior plaster to maintain its original appearance and durability for longer periods.


Understanding the key differences between interior and exterior plastering is essential for any construction or remodeling project. From the type of plaster used to the application techniques and finishes, each aspect plays a crucial role in achieving the desired results. By considering these differences, homeowners and contractors can ensure that their plastering projects are successful and long-lasting. Enhance your knowledge about the topic using this external resource we’ve compiled for you. plastering services melbourne

Would you like to explore more about this subject? Check out the related posts we’ve gathered to enrich your research:

Click for more details about this subject

Check out this informative content

Read this informative document

Discover this interesting source