Description
Ardex K15 Levelling Compound is an advanced, Rapid Drying, Heavy Duty Self-Levelling Smoothing Compound. Due to the unique rapid drying properties, Ardex K15 can receive floorcoverings in as little as 4 hours, regardless of thickness. It has very high compressive strength, ideal for LVT installations.
Ardex K15 will level and smooth, in a single application, most known uneven internal sub-floors including concrete, cement/sand screeds, porcelain, ceramic, quarry tiles and anhydrite screeds etc. prior to the installation of floorcoverings. Applications include smoothing tamped, uneven, damaged or rained-on in-situ concrete sub-floors, adjusting tolerances or camber problems between floors, slabs or pre-cast concrete, as well as smoothing old sub-floors and screeds in renovation projects.
Ardex K15 can be applied from a very thin coating up to 35mm thick. The product should be applied at thicknesses greater than 1.5mm to benefit from its self-levelling properties. NOTE: Non-absorbent sub-floors, e.g. surface damp proof membranes, must be levelled with at least 3mm of the smoothing compound up to a maximum of 6mm thick.
When applying Ardex K15 at thicknesses of over 10mm, incorporate up to an equal volume of 3mm Ardex Coarse Aggregate. For thicknesses exceeding 20mm, up to 35mm, up to an equal volume of 3-8mm clean, dry, fines free, graded gravel may be used. Mix the compound as above and add the aggregate without the further addition of water. For thicknesses greater than 7mm, it may be more convenient to use Ardex K15 HB which has aggregate incorporated. A smoothing layer of Ardex K15 may be required on top of the Ardex K15 HB prior to applying the floorcovering, depending upon the finish achieved and the floorcovering being installed.
NOTE: When smoothing over flooring grade asphalt, or over sub-floors with traces of sound, hard, non-water softenable adhesive residues, use Arditex NA.
Ardex K15 receives floorcoverings in as little as 4 hours when a high performance adhesive is used, regardless of application thickness. Rapid hardening can be walked on after 2 hours.
Coverage:
Approximately 1.4kg per m² per mm thick. e.g. One 22kg bag will give enough material to cover approx 5.25m² at 3mm thick. NOTE: The coverage figure is based on a flat level surface. Additional material should be allowed for where the surface is rough or uneven.
Technical Data:
Bulk density of powder approx. 1.1kg/litre
Weight of fresh mortar approx. 1.8kg/litre
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
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