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Cemafill ULTIMA
 

Cemfix
FLEX

FLEXIBLE TILE ADHESIVE CLASS C2TE S1
 

Advantages:

  • High deformability characteristic to cope with the deformation in substrates

  • High bond strength

  • Extended open time for easier application

  • Easy to apply, non-sag with good workability

Description:

Cemfix FLEX is a single component, high performance tile adhesive consists of distinguished blend of cement, well graded aggregate, and high content of modified polymers that forms when mixed with water an outstanding tile adhesive that capable for fixing all types of heavy or large ceramic tiles and natural stone on all common construction substrates that may be subjected to vibration or limited deflection internally or externally.

Usage


The high deformability characteristics of Cemfix FLEX make it highly recommended for fixing large format tiles or heavy natural stone such as marble and granite on floors and walls, these characteristics make it also an excellent choice for fixing tiles over headed screed or for external applications like balconies and terraces where floors and walls are continuously exposed to temperature variations.
Laying large format or heavy tiles and natural stone over concrete and cement base screed, mortar and plaster substrates.
Laying all types of ceramic tiles and stone on all common construction substrates where slightly movements or deflections are likely.
Highly recommended with underfloor heating systems.
Superb in fixing tiles in external floors and walls exposed to sever environmental conditions.

Recommended for bathrooms, kitchens and other wet areas.

Can be used for tile over tile applications.

On drywall such as gypsum boards and plaster boards. 


Materials Supplied

25kg polythene-lined paper sacks 

Coverage

Approximately:  2 - 5 kg/ m2/ 2 mm thickness. 

Storage

Store under cover, in unopened bags clear of the ground in cool dry conditions, protected from frost and excessive draught.

Shelf Life

Cemfix FLEX has shelf life 12 months if stored at temperatures between 5°C and 35°C.

Limitations

Tiles should not be placed over expansion and contraction joints, these joints should be filled with a suitable flexible sealant from the DCP Flexseal range. 

Do not apply at temperature below 2˚C. 
For heavy traffic or submerged areas, it is good practice to back butter the tile back surfaces with the adhesive to ensure 100% coverage.
For large format and heavy tiles where the weight of the tiles cannot be supported by the adhesive, the installation method shall follow a bottom-up approach, and If more than two rows of tiles are to be fixed simultaneously, the tiles are to be mechanically supported using temporary anchor nails in between tile gaps or by using inclined support stud. 

Standard

  • EN 12004, Class C2TE
  • EN 12002, Class S1

Technical Information

Fresh wet density (mixed)
EN 1015-6
1800 kg / m3
Workability
EN 1015-9
3 h
Slip
EN 1308
≤ 0,5 mm
Initial tensile adhesion strength
 EN 1348		≥ 1.0 N / mm2
Tensile adhesion strength after immersion in water
EN 1348

≥ 1.0 N / mm2
Tensile adhesion strength after heat ageing
EN 1348
≥ 1.0 N / mm2
Tensile adhesion strength after freeze - thaw cycles
EN 1348

≥ 1.0 N / mm2
Extended open time - tensile adhesion
strength after 30 min
EN 1346
≥ 0.5 N / mm2

Transverse deformation
EN 12002		≥ 2.5 mm
Compressive strength
after 3 days
after 7 days
EN 1015-11

> 7 N / mm2
> 11 N / mm2


Application Information

SUBSTRATE PREPARATION
All surfaces must be clean, dry and free from dust, oil, grease, paints or any loose material.
Concrete and cement based substrates must be sufficiently cured and dimensionally stable. Allow time for shrinkage and structural strain movements.
Gypsum boards, plaster boards, anhydrite screeds, or any highly absorbent cement based substrates such as hollow blocks and foam concrete must be sufficiently dry and free from dust.

PRIMING
Cemfix FLEX can be applied directly on concrete, cement plaster, screed and cement or line mortar. When working on porous or high absorbent surfaces such as gypsum-based materials, apply with primer - Grundix DP or Grundix Contact Plus.

MIXING
To ensure proper mixing, a mechanically powered mixer or drill  fitted with suitable paddle should be used. Add the 6.8 litre water to a clean container.   
The powder component is then added slowly to the water while mixing continuously with low speed mixer/drill (400 - 600 rpm). Mixing time should be continued for 3 minutes until a uniform consistency is obtained.


APPLICATION 
Apply a thin layer of the adhesive onto the substrate using the flat edge of the trowel.
Comb the adhesive with a suitable notched trowel horizontally to achieve a bed thickness of 2 - 5 mm.
It is always better to work in a manageable area that can be tiled within the open wet time of the adhesive.
Leave the tiled surfaces for 24 hours before grouting. 
Place the tiles with firm pressure to ensure proper contact with the adhesive.




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