Liquid screed, sometimes called flowing screed or pump applied screed, is a modern flooring solution designed to create smooth and level subfloors. Unlike traditional sand and cement screed, liquid screed arrives ready mixed and is pumped directly onto the floor. The mixture typically contains cement or calcium sulphate, sand, water, and performance additives.
Once poured, the material spreads naturally across the floor surface and finds its own level, producing a flat and consistent finish without extensive manual trowelling. In many cases, the screed becomes walkable within 24 to 48 hours, helping construction projects continue without unnecessary delays.
When should you choose liquid screed?
Liquid screed is often selected where speed, efficiency, and a high quality finish are important.
Underfloor heating systems
Because the screed flows easily around heating pipes, it removes air gaps and improves heat transfer. This helps underfloor heating systems operate more efficiently and warm up faster.
Large or complicated floor areas
Pump applied screed can cover large areas quickly, sometimes hundreds of square metres in a single day, while maintaining an even surface throughout.
Reduced thickness requirements
Liquid screed can often be installed at depths of around 35–40mm, which is thinner than many traditional screeds. This helps reduce floor weight and is useful where floor height is restricted.
Fast construction schedules
Because liquid screed cures more quickly than many traditional systems, floor coverings can sometimes be installed earlier, helping projects stay on schedule.
High quality finishes
The self levelling nature of the material creates an accurate and smooth surface that works well for tiles, commercial floors, and large format flooring.
Key benefits
Quick installation
Using pump equipment, screed can be installed rapidly, often covering around 25m² in roughly 20 minutes.
Reduced shrinkage
Liquid screed typically experiences less shrinkage than sand and cement screed, which helps minimise cracking and reduces the need for movement joints.
Improved underfloor heating efficiency
Because the screed surrounds heating pipes completely, heat transfer through the floor can be significantly improved.
Comparable overall cost
Although material costs may be slightly higher, faster installation often reduces labour costs, meaning the overall project cost can be similar to traditional screed.
How it compares
Traditional screed remains a practical option in some situations. It is generally economical and can be shaped to form slopes for areas such as wet rooms or balconies. However, it usually takes longer to dry.
Self levelling compounds are different again. These products are typically used in very thin layers of around 3–5mm to smooth small areas rather than forming the main screed layer.
Why choose Floor Screeding London?
With more than 15 years of experience across London and the South East, Floor Screeding London installs liquid, traditional, and self levelling screed systems for residential and commercial projects. Our team provides clear advice, efficient installation, and reliable results, particularly for projects involving underfloor heating