SikaCeram®-204 Medium
SikaCeram®-204 Medium is a cement-based, improved adhesive for medium sized ceramic tiles. It can be used in layers up to 10 mm thick and is suitable for tiling on both floors and walls, inside and outside of residential properties. SikaCeram®-204 Medium is C2 TE classified according to EN 12004.
- No vertical slip
- Extended open time
- Frost resistant
- Dust reduced
Usage
SikaCeram®-204 Medium is suitable for bonding the following types of tiles:- All kinds of medium-sized ceramic tiles
- Earthenware tiles
- Gypsum and cement based substrates
- Existing ceramic tiles indoors, primed with Sika® Primer-21W
- Heating floors indoors
Advantages
- No vertical slip
- Extended open time
- Frost resistant
- Dust reduced
Packaging
25 kg bag
Colour
Grey powder
Product Details
ENVIRONMENTAL INFORMATION
VOC emission classification according to Emicode EC1 plus
APPROVALS / STANDARDS
- Improved highly deformable cementitious adhesive with reduced slip and extended open time classified C2TE according to EN 12004:2007, Declaration of Performance 66114000, assessed by notified laboratory 0799, and provided with the CE marking.
- Licence for use of EMICODE n. 8069/24.02.97.
Product Declaration
| C2TE | (EN 12004) |
Chemical Base
Portland cements, selected aggregates, water retention additives, re-dispersible polymer
Shelf Life
12 months from date of production
Storage Conditions
Undamaged original sealed packaging, in dry cool conditions
Maximum Grain Size
Dmax: 0,5 mm
System Structure
For the following substrates a primer shall be used:
| Substrate | Primer |
| Absorbent substrate (cementitious screed, gypsum, plaster or anhydrite screed) | Sika® Primer-11W Sikafloor®-01 Primer (1:3) Sikafloor®-03 Primer |
| Non or partly absorbent substrate (existing ceramic tiles, PVC sheet, linoleum and existing vinyl tiled floors) | Sika® Primer-21W Sikafloor®-01 Primer Sikafloor®-02 Primer |
Application and consumption details of the primers are given in their respective Product Data Sheet.
Tensile adhesion strength
| Initial | ≥ 1,0 N/mm² |
| Water immersion | ≥ 1,0 N/mm² |
| Heat ageing | ≥ 1,0 N/mm² |
| Freeze-thaw cycles | ≥ 1,0 N/mm² |
Application
Slip resistance
| ≤ 0,5 mm | (EN 1308) |
Mixing Ratio
7,25 litres of water per 25 kg bag
29 % ± 1 %
Layer Thickness
10 mm max.
Ambient Air Temperature
+5 °C min. / +35 °C max.
Substrate Temperature
+5 °C min. / +35 °C max.
Pot Life
~3 hours at 20 °C
Open Time
| ≥ 0,5 N/mm² after 30 min | (EN 1346) |
Curing Time
~24 hours
Applied Product Ready for Use
| Use | Waiting time |
| Grouting inside / walkability | ~24 hours |
| Grouting outside | ~48 hours |
Values determined at laboratory conditions: 23 °C ± 2 °C, R.H. 50 % ± 5 %. Higher temperatures will reduce the indicated waiting time, lower temperature increase them.
Consumption
Consumption is always depent on the substrate surface's profile and roughness, as well as on the application technique (single adhesive layer on the substrate, or with an additional 'buttering' layer on the back of the tiles). As a guide:
| Size of tiles | Notched trowel size | Consumption |
| Small | 6 mm | ~2,4 kg/m² |
| Medium | 8 mm | ~2,9 kg/m² |
| Large | 10 mm | ~3,4 kg/m² |
MIXING
Pour the recommended amount of water into a suitable, clean mixing container. Whilst stirring slowly, slowly add the SikaCeram®-204 Medium powder to the water and then mix thoroughly using a low speed (~500 rpm) electric mixer until a completely homogeneous and lump-free mix is achieved.
After mixing, leave the material to stand and ‘mature’ for a few minutes, and then briefly stir again immediately prior to application. The resulting mix has a very creamy consistency and is easy to apply and spread.
APPLICATION
- SikaCeram®-204 Medium is applied using notched trowel.
- Apply sufficient product to ensure complete ‘wetting’ of the back of the tiles.
- Tiling must to be carried out on freshly applied adhesive, exerting adequate pressure to ensure complete and uniform contact with the adhesive and thus optimum bond. If a film is seen to form on the surface, the adhesive has been left for too long; should this happen, then immediately remove the adhesive layer with the trowels, discard this material and apply a fresh layer of SikaCeram®-204 Medium adhesive.
- Avoid application in direct sunlight and/or strong wind / draughts.
- SikaCeram®-204 Medium is specifically designed to be ideal for laying non-absorbent tiles up to 3600 cm2 (e.g. 60×60 cm) indoors, and 1600 cm² (e.g. 40x40 cm) for outdoors.
- To lay any tiles larger than 900 cm2 (e.g. 30×30 cm), the double-spreading (floating-buttering) technique is always recommended.
CLEANING OF TOOLS
Thoroughly clean all tools and equipments with clean water before the product has set, preferably immediately after use. Once hardened the product can only be removed by mechanical means.