Liquid Screed vs. Traditional Sand and Cement Screed: Which Is Better?

When it comes to choosing the right floor screeding solution for your project, the decision often comes down to two primary options: liquid screed or traditional sand and cement screed. Both methods serve the same purpose — creating a smooth, level surface for final flooring — but they differ significantly in performance, installation, cost, and application.

In this guide, we’ll break down the key differences to help you decide which screed type is best suited to your build.

🔍 What Is Liquid Screed?

Also known as flow screed or anhydrite screed, liquid screed is a self-leveling compound, typically made from a mixture of gypsum-based binder and fine aggregates. It is pumped onto the floor in a fluid state and spreads evenly with minimal manual intervention.

🔍 What Is Traditional Sand and Cement Screed?

This is a semi-dry mix of sharp sand, cement, and water, usually applied manually using a trowel or screed bar. It's been the industry standard for decades but requires skilled labor and more time to install and level.

✅ Advantages of Liquid Screed

1. Speed of Application
   Liquid screed can be poured quickly, with up to 2,000 m² installed in a single day, making it ideal for larger projects or time-sensitive builds.
   
   

2. Superior Heat Transfer for UFH
   The material flows around underfloor heating pipes for even coverage, reducing air gaps and improving energy efficiency.
   
   

3. Reduced Labour Costs
   Less manual effort is required, and the leveling is naturally achieved through its fluidity — no need for constant troweling or compaction.
   
   

4. Minimal Shrinkage
   Thanks to its chemical formulation, liquid screed is less prone to shrinkage and cracking during the curing process.
   
   

5. Eco-Friendliness
   Many liquid screeds use gypsum-based binders derived from industrial by-products, resulting in lower embodied carbon than cement-based mixes.
   
   

⚠️ Limitations of Liquid Screed

• Not Suitable for Wet Areas Unless Sealed
  Standard anhydrite-based screeds are sensitive to moisture and require sealing if used in bathrooms or wet rooms.
  
  

• Surface Must Be Sanded Before Tiling
  A thin surface laitance (dust layer) forms during drying and must be removed before floor coverings are applied.
  
  

✅ Advantages of Sand and Cement Screed

1. Wider Installer Base
   Nearly all builders and screeders are trained in using traditional mixes.
   
   

2. Moisture Tolerance
   Well-suited for wet environments without the need for sealing.
   
   

3. More Forgiving on Uneven Bases
   Its thicker application makes it easier to build up low spots manually.
   
   

⚠️ Limitations of Sand and Cement Screed

• Longer Drying Times
  Full cure can take 28 days or more, delaying final floor installation.
  
  

• Inconsistent Results
  Hand mixing and application can lead to uneven surfaces and greater human error.
  
  

• Less Efficient for UFH
  The lower thermal conductivity and thicker application hinder efficient heat transfer.
  
  

🏁 Which Should You Choose?

• Choose Liquid Screed if…
  You’re installing underfloor heating, working to a tight deadline, or aiming for energy efficiency and sustainability.
  
  

• Choose Sand and Cement Screed if…
  You need a budget-friendly option for small or wet areas and are not concerned about drying time or energy performance.
  
  

📞 Need Expert Advice?

At Surrey Flow Screed, we specialize in liquid screed installations across residential and commercial projects in the South East. If you’re unsure which solution is best for your project, our team is here to guide you with honest advice and professional insight.

📩 Contact us today for a free quote or site assessment.