If you’re installing new flooring in Surrey, you may come across both floor screed and self-levelling compound. While they are often used together, they perform different roles in preparing a floor surface before the final finish is installed.
What screed is
Screed is a cement-based layer installed over a structural slab or insulation layer. It is usually made from sand and cement or applied as a liquid flowing screed. Screed is typically installed at depths of 30mm or more, making it suitable for structural floor build-ups and larger areas. It is particularly useful when installing underfloor heating because it can fully surround heating pipes.
What self-levelling compound does
Self-levelling compound is designed for surface correction rather than structural build-up. It is a polymer-modified cement mixture that flows easily across the floor, filling low spots and creating a smooth finish. It is usually applied in thinner layers and often cures more quickly than traditional screed.
Key differences at a glance
Thickness: Screed is thicker and builds up the floor structure, while levelling compound corrects small imperfections.
Purpose: Screed provides strength and support; levelling compound provides a smooth finishing surface.
Installation speed: Screed takes longer to install and cure, whereas levelling compound spreads quickly and dries faster.
Best use: Screed is suited to large projects and heated floors, while levelling compound is ideal for small areas or final smoothing.
Practical guidance (Surrey)
If the subfloor only needs minor adjustment, a levelling compound may be enough. For larger renovations or floors requiring significant build-up, screed will usually be required.
Why choose Floor Screeding Surrey?
Floor Screeding Surrey installs both screed and levelling systems across Surrey, providing expert advice and reliable results.