Description Product Overview ARDEX K 275 is a high-performance, cement-based levelling and smoothing compound designed for internal subfloor preparation in commercial environments. It features an improved fast-drying formulation, allowing earlier installation of floor coverings while maintaining excellent flow and surface finish. Developed for use over internal concrete substrates, it delivers a smooth, level surface suitable for resilient flooring, carpet, and floating timber systems. The compound can be applied in a single application from 2mm up to 25mm, providing flexibility across a wide range of levelling requirements. ARDEX K 275 is suited to projects where speed, reliability, and consistent finish quality are critical. Key Features Fast drying formulation for quicker installation of floor coverings Walkable in approximately 2–3 hours Ready for tiles from approx. 4 hours Ready for vinyl, carpet, and floating floors from approx. 16 hours Application thickness from 2mm to 25mm in one coat High flow for smooth, level finish Suitable for commercial flooring applications Can be hand applied or pump applied Applications Levelling internal concrete subfloors Preparation prior to vinyl and resilient flooring Subfloor preparation for carpet and floating timber systems Commercial flooring installations Use over ARDEX screeds such as A38 and A48 Notes Mix 20kg bag with approximately 4.5 litres of clean water Apply using gauge rake and smooth with trowel or smoothing tool Working time: Not specified by manufacturer Do not rework material after approximately 10 minutes Prime substrate using ARDEX P 51 or suitable primer prior to installation Minimum substrate temperature: 10°C Suitable for pump or manual application Technical Information Technical Specifications: Type Cement-based levelling and smoothing compound Colour Grey Mix Ratio Approx. 4.5L water per 20kg bag Application Thickness 2mm – 25mm (up to 40mm with aggregate) Walk-On Time Approx. 2–3 hours Ready for Tiles Approx. 4 hours Ready for Floorcoverings Approx. 16 hours Coverage Approx. 4 m² per 20kg bag at 3mm Consumption Approx. 1.7 kg/m² per mm thickness Substrates Internal concrete, ARDEX screeds (A38, A48, K900BF) Location Internal use only Application Method Hand or pump applied Compressive Strength Approx. 17 MPa (1 day), 30 MPa (28 days) Packaging 20kg bag Shelf Life Approx. 12 months (unopened) This levelling compound is designed for fast-track commercial flooring installations where reduced downtime is critical. Its combination of rapid drying, high flow, and consistent finish makes it suitable for large-scale projects requiring efficiency and reliability.
