Floor screeds are a critical component of any building, serving as a level base for the installation of floor finishes. A floor screed is essentially a thin layer of cementitious material, usually applied over a concrete base, to provide a smooth, level surface that is ready for further finishing. There are various types of Floor Screeds, each with their unique properties and uses. In this article, we will delve into the role of floor screeds in achieving a level floor surface and the different types of floor screeds.
The Importance of Floor Screeds
Floor screeds are a crucial component of any flooring system because they serve several critical functions. Firstly, they provide a smooth and level surface that is suitable for the installation of a variety of flooring finishes, including tiles, carpets, and wood. This level surface ensures that the final finish is even and uniform, providing a high-quality aesthetic finish.
Secondly, floor screeds act as a protective layer for the concrete slab, preventing damage from wear and tear, foot traffic, and other forms of impact. They also act as a moisture barrier, preventing the penetration of water into the concrete slab and reducing the risk of damage caused by dampness.
Thirdly, floor screeds can also be used to level out uneven floors, which may be caused by variations in the height of the concrete slab, or other factors such as subsidence. This can be particularly important in commercial and industrial buildings, where the level of the floor is crucial for the safe operation of machinery and equipment.
Types of Floor Screeds
There are various types of floor screeds available, each with their unique properties and uses. The following are some of the most common types of floor screeds.
Sand and Cement Screed
Sand and cement screed is the most common type of floor screed and is widely used in both residential and commercial buildings. It consists of a mixture of sand, cement, and water, which is mixed on-site to a specific consistency and then poured onto the concrete base. Sand and cement screeds are usually applied to a thickness of between 25mm and 40mm.
Anhydrite Screed
Anhydrite screed is a self-levelling screed that is often used in large commercial buildings and industrial sites. It is made from anhydrite, a gypsum-based material, and has a smoother and more level finish than sand and cement screed. Anhydrite screed is applied in a liquid form and then left to self-level, resulting in a smooth, even finish.
Polymer Screed
Polymer screed is a type of floor screed that contains polymers, which are added to the mix to improve the strength, durability, and flexibility of the screed. Polymer screed is often used in areas that require a high level of wear resistance, such as hospitals and schools.
Flowing Screed
Flowing screed is a type of self-levelling screed that is often used in buildings with underfloor heating systems. It is made from a mixture of cement, sand, and water, with the addition of special additives that give it a self-levelling property. Flowing screed is poured onto the concrete base and then left to self-level, resulting in a smooth, even finish.
Calcium Sulphate Screed
Calcium sulphate screed is a type of floor screed that is made from calcium sulphate, a mineral that is found in gypsum. It is often used in commercial and industrial buildings, as it has excellent thermal conductivity and is easy to install.
Conclusion
Floor screeds are an essential component of any building, providing a smooth, level surface that is suitable for the installation of a variety of flooring finishes. They also act as a protective layer, preventing damage to the concrete slab and reducing the risk of dampness. With various types of floor screeds available, each with their unique properties and uses, it is important to select the right type of screed for a specific application.
When choosing a floor screed, factors such as the type of building, the intended use of the space, and the flooring finish must be taken into consideration. The expertise of a flooring professional can be instrumental in selecting the right type of floor screed for a specific application, ensuring a high-quality finish that is both durable and functional.
In addition to selecting the right type of floor screed, proper installation is crucial to achieving a level surface. Floor screeds must be installed by experienced professionals who have the necessary skills and knowledge to ensure that the screed is level, smooth, and properly bonded to the concrete base.
The installation process typically involves the use of specialized equipment, such as screed pumps and levelling equipment, to ensure that the screed is applied evenly and to the desired thickness. After installation, the screed must be left to cure for a specific period, usually around seven days, before the final flooring finish can be applied.
Maintenance of floor screeds is also important in ensuring their longevity and functionality. Regular cleaning and maintenance, such as sweeping and mopping, can help to prevent the accumulation of dirt and debris, which can lead to scratches and other damage to the surface. Any spills or stains should be cleaned up immediately to prevent damage to the screed.
In conclusion, floor screeds play a crucial role in achieving a level floor surface, and the selection of the right type of screed is essential in ensuring a durable and functional flooring system. With proper installation and maintenance, floor screeds can provide a long-lasting, high-quality finish that meets the needs of any building or space.
Check the best Cement Plastering Work suppliers in Bahrain.