Cemfloor binder is a specialised dry powder additive designed to enhance cement-based floor screeds. It consists primarily of finely ground, highpurity calcium carbonate and blended with a proprietary hydraulic activator to create a free-flowing, self-compacting screed when mixed on-site with cement, suitable sand, and water. This formulation complies with EN 12620:2013 for aggregates in concrete and supports screeds meeting EN 13813.
The binder achieves self-levelling floors by eliminating segregation, bleed water, and excessive shrinkage, while boosting flowability, thermal conductivity, and finishing qualities. Ideal for domestic renovations, commercial spaces, and light industrial settings, it excels in bonded, unbonded, or floating applications over concrete substrates. Cemfloor screeds are particularly suited for underfloor heating systems due to minimal thickness requirements (e.g., 25mm cover over pipes) and rapid drying—foot traffic possible in 24 hours. Its use shortens construction times by enabling thinner sections (domestic min. 35mm, commercial 40mm) and up to 70% weight reduction versus traditional sand-cement screeds. This enables efficient underfloor heating integration, wet rooms, and high-traffic polished finishes (SR2 flatness), promoting sustainable construction with reduced material use and faster timelines.