ARDEX K 15 HB is an advanced and versatile high build levelling compound designed for applications from 5mm up to a maximum of 35mm. It is virtually tension free and is designed to rapidly level uneven, hard subfloors. Used in conjunction with either ARDEX P 82, ARDEX P 51 or ARDEX P 4 primers, ARDEX K 15 HB can be applied to old subfloors, e.g. concrete and other hard and rigid bases. ARDEX K 15 HB is a grey powder consisting of special cements, graded aggregates and high quality synthetic resins. When mixed with water, a fluid, pumpable mortar is produced which can be applied to the required thickness in one operation.

For thicknesses greater than 20mm it is possible to incorporate ARDEX Coarse Aggregate in the mixed mortar, thus giving significant cost savings for greater application thicknesses. When applied at 20°C ARDEX K 15 HB can normally be walked on after approximately 2 hours. The applied product dries and hardens rapidly so that even thick applications are ready to receive resilient floor finishes such as PVC within 24 hours. Ceramic floor tiles can be installed on top of ARDEX K 15 HB as soon as the surface of the ARDEX K 15 HB has attained sufficient strength and hardness, typically 4 hours after application at 20°C.

• Apply from 5mm to 35mm in one application
• Rapid hardening – walkable in approximately 2 hours, even with thick applications
• Floorcoverings can be applied after 24 hours, regardless of thickness
• Ceramic floor tiles can be fixed after 4 hours
• Pumpable
• Strong, high compressive strength

Working time at 20°C
approx. 30 minutes

Flow life at 20°C
approx. 15 minutes

Initial Set (Vicat)
approx. 30 minutes

Final Set (Vicat)
approx. 2 hours