PlaneMix 100

PlaneMix 100

Fast-setting screeding mortar

  • For screeding, straightening and repairing subfloors
  • Approved for wet rooms
  • For interior and exterior use
  • Semi-dry consistency
  • Foot traffic after 3 hours
  • Ideal for subfloor repairs
  • Thickness: 20 - 100 mm

Product calculator


Product facts


Grey, fast-setting, polymer modified cement-based powder.
Applicable by trowel.
Grain sizes up to 5 mm.




Ca. 1700 kg pr. m3


Thickness in mm
Kg per m²
20 mm
Approx. 35
50 mm
Approx. 85
100 mm
Approx. 170


Available in 20 kg PE lined paper bags.



Expected Result



Surface preparation

Fixing dowels





Alfix A/S
H.C. Oersteds Vej 11-13
DK-6000 Kolding 08
Declaration of performance
No. 16
DS/EN 13813 CT-C25-F6 Alfix Alfix PlaneMix 100
Cementitious screed
material for use interally
in buildings.
Reaction to fire A1 Release of corrosive
Water permeability NPD Water vapour permeability NPD
Compressive strength C25 Flexural strength F6
Wear resistance NPD Sound insulation NPD
Sound absorption NPD Thermal resistance NPD
Chemical resistance NPD    

NPD = No performance determined

Tile fixing

Tile fixing



Technical data

Working temperature

+10°C - +25°C


1.9 kg/litre (mixed with water)

Working time

Approx. 60 minutes at +20°C

Foot traffic

After 3 hours at +20°C

Full strength

After 7 days at +20°C

Compression strength, 28 days

25 - 35 N/mm²


Cohesion strength approx. 1.5 N/mm²

Shelf life

Min. 6 months in unopened bag

Compression strength, 28 days

30 - 40 N/mm²

Bending tensile strength

5 - 7 N/mm²


Cohesion strength approx. 1.5 N/mm²

Shelf life

Min. 6 months in unopened bag

How to use


Concrete with or without underfloor heating, existing tiles, terrazzo, and timber floors.
Use as bonded or floating coating on screed.
For further information or details, please contact our Technical Services Dept.

Surface preparation

The surface should be dimensionally stable, sound, clean and free from dust and laitance. For surfaces requiring bonded coating, broom or brush the surface with a mixture of Alfix PlaneMixPrimer and Alfix PlaneMix 100 in the ratio 1:1.
Apply the mixture thoroughly by use of brush or broom and work it well into the surface.
Do not allow the slurry to dry before further treatment.
Ensure a room temperature of min. +10°C.

How to use

Add approx. 1.8 - 2,0 litres of clean cold water per 20 kg bag of powder. Use large mixing container, drum, paddle stirrer or electric drill and mix thoroughly for approx. 2 minutes until a semi-dry consistency is obtained.
Lay out PlaneMix 100 wet-on-wet onto the brushed surface and spread evenly. Upon compaction, level and render the surface by use of smoothing board/straight edge. If necessary, steel trowel the surface until it appears smooth and closed.
Application, rendering and trowelling should be done in one, ongoing work operation. Do not work over larger areas than can be completed within the 60 minutes working time stated.

Min. bed thickness – bonded screed on concrete: approx. 20 mm.
Min. bed thickness – floating screed: approx. 40 mm.


Additional water should not be added to screeding mortar already starting to set. Note that the temperature of mixing water will influence working time/pot life. Over dosage of water will reduce strength and may cause crack formation.
Protect from direct sunlight.
Switch off any underfloor heating and allow 7 days before switching heating back on.
Tiling: 12 hours at +20ºC
Tanking and tiling: 24 hours at +20°C


Tools and tiles should be cleaned with water before the mortar sets.
Cement-based products harden when mixed with water, hence do not pour surplus PlaneMix into the drain system.

August 2019

Alfix CeraFill 10 colour Universal grout has been improved, and its name is now being changed to UniversalFuge - CeraFill 10.


Read moreSee the archive here


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