Stone SX 50 MB Quick-setting, grey medium bed mortar

codex Stone SX 50 MB is a grey, rapid-setting, polymer medium bed mortar. Thanks to its fast and crystalline water retention, the codex Stone SX 50 MB is soon ready for foot traffics and increases reliability when installing natural stone.


The codex Stone SX 50 MB grey medium-bed mortar is designed for a wide range of applications. From normal, standard installation to coverings subject to high loads.

  • For tiles of different thickness (calibrated/non-calibrated)
  • For natural stone that is not prone to discolouration
  • For granite, quartzite, etc.
  • For tiles and sheet material
  • For concrete stones
  • On mastic asphalt
  • On calcium sulphate and cementitious screeds, concrete
  • On lime-cement and cement plaster
  • On gypsum carton and gypsum board plates
  • On underfloor heating
  • For interior and exterior use


  • Up to 20 mm mortar bed thickness
  • Soon ready for foot traffic (approx. 2.5 hours)
  • Smooth and easy to process
  • Very good stability even, when installing large, heavy natural stone tiles
  • Waterproof and frost-resistant
  • Meets the requirement C2 FE according to EN 12004

The grey codex Stone SX 50 gives you reliable installation of natural stone thanks to its crystalline water retention properties. It is also time-saving, as it is quickly ready for foot traffic.

Technical data

*At 23 °C and 50 % humidity.
Pack type

paper bag

Pack size

25 kg

Shelf life

9 months



Mortar bed thickness

5 to 20 mm

Minimum working temperature

+ 5 to + 25 °C

Ideal working temperatures

+ 15 to + 25

Water quantity required

0.2 - 0.24 litres/ 1 kg
5 - 6 litres/ 25 kg bag

Working Time/ Pot Life

approx. 40 minutes*

Working time

approx. 30 minutes*

Set to foot traffic

after approx. 2.5 hours*

Ready for jointing

after approx. 2.5 hours*


after approx. 48 hours*

Final strength

after approx. 28 days*


4 - 5.1 kg/m²

Ordering information

Article Packsize Shipping unit
codex Stone SX 50 MB / 25 kg 162019 25 kg
Pallet :
42 bags

Quality seals and badges


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