ARDEX K 39
Application

  • The product will level and smooth, in a single application, all uneven internal sub-floors including concrete, cement/ sand screeds, anhydrite screeds etc.
  • Direct to earth sub-floors must have an effective damp proof membrane (DPM). If the DPM is absent or damaged, or the substrate is damp consult the ARDEX DPM1C, or ARDEX DPM1CR datasheet for further information.
  • All surfaces must be primed (ARDEX P51). ARDEX P4 Primer and ARDEX P 82 Primer are both recommended by the manufacturer for use on ARDEX DPMs (3–6 mm and non-absorbent subfloors up to 10 mm in depth).
  • For thicknesses that exceed the above recommendations use ARDEX R3E blinded with ARDEX Fine Aggregate as the primer coat.

Description

An advanced, high-performance self-smoothing and levelling compound with extended workability, high flow levelling and smoothing compound.

Features and benefits:

  • 40 minute working time.
  • Good flow and finish.
  • Walkable in around two hours.
  • No patching or rubbing down required.
  • Creates a subfloor with no trowel marks, ridges or joint marks.
  • Good coverage: 7.4 m² at 2 mm thick (5 m² at 3 mm thick).
  • Suitable for underfloor heating.
  • GEV-EMICODE® EC1+R, very low emission.
  • CE marked to EN 13813 (CT-C35-F7).

Applications:

  • The product will level and smooth, in a single application, all uneven internal sub-floors including concrete, cement/ sand screeds, anhydrite screeds etc.
  • Direct to earth sub-floors must have an effective damp proof membrane (DPM). If the DPM is absent or damaged, or the substrate is damp consult the ARDEX DPM1C, or ARDEX DPM1CR datasheet for further information.
  • All surfaces must be primed (ARDEX P51). ARDEX P4 Primer and ARDEX P 82 Primer are both recommended by the manufacturer for use on ARDEX DPMs (3–6 mm and non-absorbent subfloors up to 10 mm in depth).
  • For thicknesses that exceed the above recommendations use ARDEX R3E blinded with ARDEX Fine Aggregate as the primer coat.

General information

Uniclass 2015

Pr_35_31_06_80 Smoothing and levelling underlay compoundsPrimary

CAWS

M10/160 Proprietary self smoothing levelling screeds

M40/460 Smoothing underlayment

M50/460 Smoothing/ levelling underlayment compound

M50/65 Laying coverings

Specification data - Smoothing and levelling underlay compounds

Product Reference

ARDEX K 39

Application thickness

1.5 mm

2 mm

3 mm

10 mm

Standard product features

Technical characteristics:

  • Working time at 20°C: Approx. 40 minutes.
  • Flow life at 20°C: Approx. 25 minutes.

- Compressive strength:

  • After 1 day 6.0 N/mm².
  • After 7 days 22.0 N/mm².
  • After 28 days 29.0 N/mm².

- Tensile bending strength:

  • After 1 day 2.0 N/mm².
  • After 7 days 5.0 N/mm².
  • After 28 days 8.0 N/mm².

Product Options

Application thickness:

  • The product can be applied from 1.5 mm up to a maximum of 10 mm in a single application. To utilize its free-flowing properties the minimum application thickness should be at least 2 mm. A minimum thickness of 3 mm should be applied on a non-absorbent sub-floor where an absorbent layer is required by the flooring adhesive.
  • When applying at thicknesses over 10 mm, incorporate up to half a volume of ARDEX Coarse Aggregate.

Literature
Third party certifications
  • FEICA (Association of European Adhesive & Sealant Industry): Certificate: EPD-FEI-20160042-IBG1-EN : Environmental Product Declaration for “modified mineral mortars, group 2”
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