Liquid Floor Screed: Everything You Need To Know

If you are considering using liquid floor screed in your next project, it’s a wise choice. This effective flooring solution is highly versatile, promises a smooth and level finish, and is compatible with underfloor heating systems thanks to its energy-efficient thermal properties. It also offers a hard-wearing surface that can cope with moderate to heavy traffic in domestic, commercial, and industrial areas.

In this article, we’ll explore the ins and outs of liquid screed, where it can be used, its benefits, and how you can choose the right team to complete your screeding project. By the end, you’ll be better positioned to decide whether liquid screed is the best choice for your needs and to arrange installation.

What is Liquid Floor Screed?

So, what is liquid floor screed, and why is it used so much today in residential and commercial applications?

Liquid floor screed, or flowing screed, is a type of flooring material used to create smooth, level surfaces before the final floor finish is applied. It is a pumpable, self-levelling material that flows effortlessly to fill gaps and create an even surface. Over the years, this type of screed has gained popularity due to its efficiency and superior finish compared to traditional screeds.

Whether you are a homeowner looking for a new kitchen flooring solution or a construction manager looking to create a level concrete base for the fitted main floor, Screedafloor can help you get the best finish and performance.

We specialise in applying a wide selection of liquid screed solutions, including calcium sulphate screed, also known as anhydrite screed. We’ll choose the best mix and materials to suit your project and ensure a durable concrete subfloor ready for the next flooring phase.

Types of Liquid Screed and Composition

There are typically two types of liquid screed: anhydrite screeds, also known as calcium sulphate screed, and cementitious screed. Both anhydrite screeds and cementitious variations offer excellent results and can be used across a wide range of applications. Let’s look at their differences and compositions.

Anhydrite Screed

Anhydrite screed is a liquid floor screed made from an anhydrous (water-free) form of calcium sulphate, known as anhydrite, mixed with water and other additives. It is a popular choice for creating smooth, level subfloors in both residential and commercial buildings.

Composition

Anhydrite screed is made up of:

Anhydrous Calcium Sulphate: The main binder that holds everything together.

Water: Added to activate the binder and create a workable mixture.

Aggregates: Typically fine sand, which provides bulk and stability.

Additives: Polymers or other materials to improve flow, setting time, and strength.

Differences from Traditional Screed

There are many differences between traditional sand and cement screed and liquid screed. Let’s take a look at the different application methods, drying times, and thickness between the two types.

At Screedafloor, we offer a wide selection of screed types, including cement based screed, liquid screed, and other screeds tailored to your exact requirements.

From commercial applications to domestic buildings, our experts will always get the best results no matter what the scope of the project.

Application Method:

Liquid Floor Screed: Applied using a pump, which allows for faster and more efficient installation. It is self-levelling, which reduces the need for manual levelling and ensures a smooth finish.

Traditional Sand and Cement Screed: Applied manually using a trowel and straight edge. This process is labour-intensive and time-consuming, requiring skilled workers to achieve a level surface.

Drying Time:

Liquid Floor Screed: Dries faster and can be walked on within 24-48 hours. The drying time for full curing is also shorter, which speeds up construction schedules.

Traditional Screed: Takes longer to dry and cure, typically needing several weeks before it can be walked on or have flooring applied.

Thickness:

Liquid Floor Screed: Can be applied in thinner layers, which is advantageous in buildings where floor height is a concern.

Traditional Screed: Requires a thicker layer to achieve the same strength and durability, which can be a disadvantage in height-restricted areas.

Thermal Efficiency:

Liquid Floor Screed: Better suited for underfloor heating systems due to its ability to fully cover the heating pipes, providing more efficient heat transfer.

Traditional Screed: Less efficient with underfloor heating as it may not encapsulate heating pipes as effectively.

Benefits of Liquid Floor Screed

We could talk about the benefits of liquid floor screed all day. We love working with this free-flowing, quick-drying flooring solution and impressing our customers with the stunning and durable floor finishes that can be achieved. Here are just some of the benefits of liquid screed.

Smooth, Level Finish – Ideal for All Floor Coverings: Because liquid floor screed is self levelling, it provides a perfectly smooth and even surface. This seamless finish is ideal for applying a variety of floor coverings, including tiles, hardwood, carpet, and vinyl, ensuring a flawless final look.

Faster Installation Compared to Traditional Dry Screed: The fluid nature of liquid screed allows it to be poured and spread quickly over large areas, significantly reducing installation time. This efficiency minimises project timelines and labor costs.

Reduced Floor Depth Compared to Traditional Screed: Liquid screed can be applied in thinner layers than traditional sand-cement screed, allowing for a lower overall floor depth. This is particularly beneficial in renovations or spaces with height restrictions.

Excellent Thermal Conductivity for Underfloor Heating Systems: Liquid screed’s consistency and density ensure excellent thermal conductivity. This results in more efficient heat transfer from underfloor heating systems, providing even and responsive heating throughout the space. If you’re considering the installation of underfloor heating, we advise having this work completed at the same time as your screeding works.

Low Shrinkage, Minimising Cracking Risk: Due to its composition, liquid screed exhibits low shrinkage during the drying process. This characteristic significantly reduces the risk of cracks forming, ensuring a durable and long-lasting floor surface.

Easier to Work With: Liquid screed is easier to pour and spread than traditional screeds, simplifying the application process.

Applications of Liquid Floor Screed

At Screedafloor, we’ve worked on countless builds and renovation projects that have called for liquid screed solutions. Whether you are planning a new construction, new commercial or domestic flooring, or looking for a solution to use over a subfloor, we have you covered. Here are just some of the applications we can apply our expertise to.

New Build and Renovation Projects: Liquid floor screed is ideal for both new construction and renovation projects due to its quick application and minimal drying time. It allows builders to stay on schedule and provides a perfect foundation for the next stages of construction.

Residential and Commercial Flooring: Whether for homes or commercial spaces like offices and retail stores, liquid screed offers a smooth and durable surface. Its seamless finish makes it suitable for high-traffic areas, ensuring longevity and ease of maintenance.

Suitable for Use Over Various Subfloors: Liquid floor screed can be applied over a variety of subfloors, including concrete, timber, and insulation boards. This versatility makes it an excellent choice for diverse construction scenarios, ensuring compatibility and a strong bond with different base materials.

Perfect for Underfloor Heating Systems: The excellent thermal conductivity of liquid screed enhances the efficiency of underfloor heating systems. It ensures even heat distribution and quicker response times, improving energy efficiency and providing consistent warmth throughout the space.

Can Liquid Screed Be Used as a Finished Floor?

Liquid screed is not typically used as a finished floor surface for several reasons. First, it is porous and vulnerable to moisture absorption and staining. It often needs additional treatments to protect it and improve durability, such as covering it with another flooring solution or sealing.

The appearance of liquid screed is not as aesthetically pleasing as that of other finished floor options, such as wood or ceramic tiles. However, it can be suitable for commercial and industrial settings where durability wins over style.

If you’re looking for a screed that can be used as a final floor finish, vinyl or resin screed are excellent choices. Compared to liquid screeds, they offer a beautiful, glossy finish that looks great in kitchens, bathrooms, restaurants, and other commercial settings.

Installation Process of Liquid Floor Screed

The installation process for liquid screed starts with preparing the substrate. It’s essential to have a clean and level surface prior to application to ensure proper adhesion and a smooth finish. Non flat surfaces can result in bumps and inconsistencies that can present problems for the final floor coverings.

The screed is carefully mixed to the right consistency and pumped onto the floor for even coverage. A dapple bar is then used to ensure a smooth, durable finish and remove air bubbles. The screed is then left to dry and cure.

Speak to the Local Liquid Screed Experts

With years of experience in liquid screed solutions, nobody does it better than Screedafloor. We will tailor our services to suit your needs, from construction projects to residential renovations. Contact us today to find out more about our solutions and to request a quote. We can also assist with liquid screed pump hire.