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Self-levelling screed delivered through a pipe on an underfloor heating installation
Self-levelling screed is a highly effective flooring solution designed to create a smooth, even surface with minimal effort. This type of screed is ideal for both new construction and renovation projects, providing a perfect base for a variety of floor coverings.

What is Self-Levelling Screed?

Self-levelling screed is a specialised type of screed that flows easily and evenly to create a flat, level surface. It is made from a mixture of cement, fine aggregates, and polymer additives that enhance its flow properties. Unlike traditional screed, self-levelling screed does not require extensive manual levelling, making it a popular choice for fast and efficient floor preparation.

A self-levelling compound is a type of floor levelling material that is used to create a smooth and level surface on an existing floor. It is typically made from a blend of cement, fine aggregates, and other additives that help it flow smoothly and self-level when poured onto the floor surface.

Self-levelling compounds are designed to be poured over concrete or other types of sub floor that may have uneven or rough surfaces. They can be used to level out minor imperfections or to create a completely level surface for the installation of new flooring materials such as tile, carpet, or hardwood.

The application process for a self-levelling compound typically involves mixing the compound with water to form a thin liquid, which is then poured onto the floor surface and spread out using a trowel or similar tool. The compound will then self-level, filling in any low spots or uneven areas on the floor surface.

Once the self-levelling compound has dried and cured, it provides a smooth and level surface that is suitable for the installation of most types of flooring materials. It is important to note, however, that self-levelling compounds should only be used as a surface levelling material and should not be used to provide structural support or to level out major flaws or defects in the subfloor.

Application Process

The application of self-levelling screed involves several key steps to ensure a high-quality finish:

1. Surface Preparation

The substrate is thoroughly cleaned and any debris, dust, or contaminants are removed. Cracks and imperfections are repaired to create a solid base. In some cases, a primer may be applied to enhance adhesion.

2. Mixing

The self-levelling screed is mixed according to the manufacturer’s instructions, ensuring the correct proportions of water and screed mix. Proper mixing is essential to achieve the desired flow properties.

3. Pouring and Spreading

The screed is poured onto the prepared substrate and spread evenly using a trowel or a screed rake. The self-levelling nature of the screed allows it to flow and settle into a smooth, even layer.

4. Levelling

While the screed largely levels itself, any minor adjustments can be made with a trowel to ensure a uniform surface. Care is taken to avoid overworking the screed, which can affect its self-levelling properties.

5. Curing

The screed is allowed to cure for the specified period, which can vary based on the product used and environmental conditions. Proper curing is essential to achieve the desired strength and durability.

Conclusion

Self-levelling screed offers numerous benefits, including a smooth and level finish, time efficiency, easy application, compatibility with underfloor heating, reduced thickness, and high compressive strength. Its versatility makes it suitable for a wide range of applications, from residential properties to commercial and industrial buildings. By following the correct application process, construction professionals can ensure a high-quality, durable flooring solution that meets the needs of their projects.

Friendly expert advice

Speak to Tristan or Liam about your screed requirements on 01933 716018 or fill out the contact form below. We look forward to hearing from you.

Self-levelling screed delivered through a pipe on an underfloor heating installation

Key Benefits

Smooth and Level Finish

One of the primary advantages of self-levelling screed is its ability to create an exceptionally smooth and level finish. This is crucial for the proper installation of floor coverings such as tiles, vinyl, carpet, and laminate.

Time Efficiency

Self-levelling screed sets and cures more quickly than traditional screeds, reducing the overall project time. This allows for faster progression to subsequent construction phases or floor covering installation.

Easy Application

The self-levelling properties of this screed make it easy to apply, requiring minimal manual intervention. It can be poured and spread with simple tools, reducing labour costs and effort.

Compatibility with Underfloor Heating

Self-levelling screed is an excellent choice for use with underfloor heating systems. It effectively encapsulates the heating elements, ensuring efficient heat distribution and reducing the risk of damage.

Reduced Thickness

Self-levelling screed can be applied in thinner layers compared to traditional screeds, making it ideal for projects where floor height is a concern. This also contributes to a lighter overall floor structure.

High Compressive Strength

Despite its thinner application, self-levelling screed provides high compressive strength, ensuring durability and longevity. It can withstand heavy foot traffic and load-bearing applications.

Applications

Self-levelling screed is versatile and suitable for a wide range of applications:

  • Residential Properties: Ideal for creating a smooth base in homes and apartments for various floor coverings.
  • Commercial Buildings: Used in offices, retail spaces, and public buildings where a high-quality finish is required.
  • Industrial Facilities: Suitable for factories and warehouses, providing a durable and level surface.
  • Healthcare Facilities: Used in hospitals and clinics to ensure a smooth, easy-to-clean surface.
  • Educational Institutions: Applied in schools and universities for quick, efficient floor preparation.

What are the advantages of using a Self-Levelling Screed ?

Self-levelling screed is often used for the levelling of poor substrates in order to achieve a finer tolerance. ie: Provides a perfectly flat surface for fitting additional floor surfaces ( ie. preparing for fixed floor coverings such as, carpet , LVT flooring, floor tiles or engineered flooring.

  • Fast & easy installation : Much faster than traditional screed
  • Reduced drying times
  • High strength : Stronger than sand cement screed. no reinforcement required.
  • Thinner : Can be laid at much thinner than traditional screed.
  • Smoother surface : Ready to take floor finishes
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Buy Floor Screed Materials

Heat and Screed store are leading UK suppliers of Floor screed products, underfloor heating systems, epoxy resin flooring. Leading brands ThermoSphere, DCP and Baron

Floor screeding case studies
Professional floor screed services in Northamptonshire

Our floor screed services. Click images for more information

Screed contractors installing liquid screed poured directly from a large cement mixer truck for new warehouse flooring

Liquid Screed

Floor screed contractor working with traditional screed on a house extension project

Traditional screed

Interior fast drying screed used at a new build in Northamptonshire

Fast drying screed

Floor screeding in progress, showing piles of traditional screed and semi exposed underfloor heating pipes

Underfloor heating screed

Floor screed contractor, installing fibre reinforced screed at a warehouse – Bedford

Fibre reinforced screed

Self-levelling screed delivered through a pipe on an underfloor heating installation

Self-Levelling screed

Areas we cover

Based in the Midlands, our floor screeding team covers Northampton, Cambridgeshire, Bedfordshire, Lincolnshire, Peterborough and Leicester. In addition, we will travel to most areas in the South of England, including London.
We cover all areas of Northamptonshire.

Midlands floor screeding

Areas we cover

Based in the Midlands, our floor screeding team covers Northampton, Cambridgeshire, Bedfordshire, Lincolnshire, Peterborough and Leicester. In addition, we will travel to most areas in the South of England, including London.
We cover all areas of Northamptonshire.

If you are laying carpet or vinyl flooring you will need a self-levelling screed finish as it provides a perfectly flat surface.There are different types of self-levelling screeds,  water-based or latex-based both of which offer excellent self-levelling properties and are very fast setting.  Another benefit is its thermal responsiveness making it ideal for underfloor heating. Ideally, a self-levelling screed surface should be left a minimum of 12 hours but sometimes up to 72 hours before any foot traffic, thus ensuring the longevity of the floor.