Cement screeding is the process of applying a thin layer of cement mortar over a concrete floor, wall, or ceiling surface to create a smooth and level finish. It is typically used to prepare a surface for the installation of floor finishes such as tiles, vinyl, or carpet, or to create a smooth surface for painting or other decorative treatments.
The process involves mixing cement, sand, and water to form a smooth paste, which is then applied to the surface with a trowel and smoothed out to create a level and uniform finish. Cement screeding is a popular choice for both residential and commercial projects due to its durability, affordability, and versatility.
Is Cement Screeding Necessary?
Whether or not you should cement screed before painting depends on the condition of the surface you are painting. Cement screeding can be a good option if the surface is uneven or has imperfections that need to be smoothed out. Applying a cement screed can create a smooth, level surface that is ideal for painting, as it allows the paint to be applied evenly and smoothly.
However, if the surface is already smooth and level, or if it has been previously painted, it may not be necessary to apply a cement screed before painting. In these cases, you may be able to paint directly onto the surface, provided it is clean and free from debris.
It’s important to note that cement screeding can be a time-consuming and labor-intensive process, so it may not be necessary or cost-effective for every painting project. Before deciding whether to cement screed, consider the condition of the surface, the type of paint you plan to use, and your budget and timeline for the project.
Consulting with a professional painting contractor can also be helpful in determining the best approach for your specific needs and requirements.
Types of Cement Screeding
There are several types of cement screeding that can be used depending on the specific needs of a project. Some common types of cement screeding include:
Standard cement screed
This is the most commonly used type of cement screed, and it consists of a mixture of cement, sand, and water. It is typically used for leveling concrete floors and creating a smooth surface for the installation of floor finishes.
Bonded cement screed
This type of screed is applied directly onto an existing concrete surface, using a bonding agent to ensure strong adhesion. Bonded screed is often used for refurbishment projects or to repair damaged concrete surfaces.
Unbonded cement screed
It is a type of screed that is applied onto a separate layer of insulation material, such as foam or polystyrene. It is typically used for underfloor heating systems or to create a soundproofing layer.
Polymer-modified cement screed
This type of screed includes polymer additives that improve its strength, flexibility, and durability. It is commonly used for high-traffic areas or in environments where the screed is exposed to moisture or chemicals.
The type of cement screed used will depend on the specific requirements of the project, including the type of surface being screeded, the intended use of the surface, and the conditions in which it will be exposed. Consulting with a professional contractor can help ensure that the right type of cement screed is used for the job.