PlaneMix 80
Fast-track screeding mortar
- Screeding mortar for floors onto joisted timber, concrete, or terrazzo
- For bonded or floating screeds and subfloor repairs
- For interior use
- Foot traffic after 3 hours
- Ready to receive dense coverings after 24 hours
- Ideal for rapid preparation of subfloor
- Suitable for underfloor heating
- Thickness: 20 - 80 mm
Product facts
Product
Grey, fast-setting, polymer modified cement-based powder.
Applicable by trowel.
Grain sizes up to 5 mm.
Colours
Coverage
Coverage
Ca. 1700 kg pr. m3
Packaging
Available in 20 kg PE lined paper bags.
Features
Generel
Expected Result
Application
Waterproofing
Surface preparation
Fixing dowels
Finishing
Sealings
Flooring
Precautions
 |
Alfix A/S H.C. Oersteds Vej 11-13 DK-6000 Kolding alfix.com 08 |
Declaration of performance No. 15 |
DS/EN 13813 CT-C40-F6 Alfix PlaneMix 80 Cementitious screed material for use interally in buildings. |
| Reaction to fire | A1 | Release of corrosive substances |
CT |
| Water permeability | NPD | Water vapour permeability | NPD |
| Compressive strength | C40 | 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
Tests
Surfaces
Technical data
+10°C - +25°C
1.9 kg/litre (mixed with water)
Approx. 45 minutes at +20°C
After 3 hours at +20°C
After 3 hours at +20°C
After 4 hours at +20°C
After 7 days at +20°C
After 24 hours at +20°C
After 7 days at +20°C
40 - 45 N/mm²
5 - 7 N/mm²
Cohesion strength approx. 1.5 N/mm²
Min. 6 months in unopened bag
How to use
Surfaces
Wooden floor constructions onto existing timber joist systems in areas up to 6 m². Joist spacing: 600 mm.
Concrete with or without underfloor heating, existing tiles, or terrazzo for bonded or floating coating on screeds.
Surface preparation
The surface should be dimensionally stable, sound, clean and free from dust and laitance. For application on timber joisting apply rigid/hard insulation between joists and provide floating coat consisting of 2 layers of geotextile. Subsequently install reinforcement mesh, diameter 6 mm.
For surfaces requiring bonded coating, broom or brush the surface with a mixture of Alfix PlaneMixPrimer and Alfix PlaneMix 80 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 80 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 45 minutes working time stated.
Min. bed thickness – bonded screed on concrete: approx. 20 mm.
Min. bed thickness – floating screed: approx. 40 mm.
NB!
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.
Switch off any underfloor heating and allow 7 days before switching heating back on.
Application in wet rooms requires subsequent tanking with sealing membrane.
Tanking and tiling: 4 - 6 hours at +20°C
Dense coverings: 24 hours at +20°C
Levelling: Use Alfix PlaneMix S8 rapid or alternatively Alfix PlaneMix S12 rapid after 4 – 6 hours.
Cleaning
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.
