SikaCeram®-205 Medium
Cementitious normal setting floor and wall tile adhesive for medium sized ceramic tiles
SikaCeram®-205 Medium is a cementitious, polymer modified powdered floor and wall adhesive for medium sized ceramic tiles. It is suitable for bonding all types of tiles and for spot-fixing interior insulating panels.
- Layer thickness: 1–10 mm
- Normal setting
- No vertical slip
- High slump resistance and grab
- Extended open time
- Frost resistant
- Suitable for all types of ceramic tiles
- Typical bonding substrates: Cementitious screed, concrete, plaster, ceramic tiles, vinyl tile / sheet, linoleum, calcium sulphate screed, gypsum fibre boards
- Spot-fixing interior insulating panels of polystyrene, polyurethane foam and glass / rock wool
Usage
Bonding the following types of tiles:- Ceramic
- Earthenware
- Porcelain
- Stoneware
- Terrazzo
- Unglazed
- Balconies
- Heated floors (Water systems)
- Kitchens
- Overlaying existing indoor sound ceramic tiles
- Residential environments
- Terraces
- Wet areas
- Spot-gluing insulating panels made of polystyrene, polyurethane foam, rock or glass wool
- Interior and exterior use
Advantages
- Layer thickness: 1–10 mm
- Normal setting
- No vertical slip
- High slump resistance and grab
- Extended open time
- Frost resistant
- Suitable for all types of ceramic tiles
- Typical bonding substrates: Cementitious screed, concrete, plaster, ceramic tiles, vinyl tile / sheet, linoleum, calcium sulphate screed, gypsum fibre boards
- Spot-fixing interior insulating panels of polystyrene, polyurethane foam and glass / rock wool
Packaging
20 kg bag
Colour
Grey powder
Product Details
APPROVALS / STANDARDS
- CE Marking and Declaration of Performance to EN 12004 - Adhesives for ceramic tiles - C2 TE
Chemical Base
Polymer modified, Portland cement based, with selected aggregates, water retainers and other special additives
Shelf Life
12 months from date of production
Storage Conditions
Product must be stored in original, unopened and undamaged packaging in dry conditions at temperatures between +5 °C and +35 °C. Always refer to packaging.
Maximum Grain Size
Dmax: 0,5 mm
Product Declaration
EN 12004: C2TE
System Structure
For the following substrates, a primer must be used:
Substrate | Primer |
Absorbent substrate (cementitious screed, cementitious plaster, concrete) | Sika® Primer-11W+ (1:3) Sikafloor®-01 Primer (1:3) Sikafloor®-03 Primer |
Non and low absorbent substrate (existing tiles, linoleum, existing vinyl tiles floors) | Sika® Primer-21W Sikafloor®-02 Primer |
Calcium sulphate substrate (gypsum, gypsum fibre boards, calcium sulphate screed) | Sika® Primer-11W+ (1:1) Sikafloor®-01 Primer (1:1) Sikafloor®-03 Primer |
(1:3 or 1:1) denotes primer dilution with water. Primer : Water
Tensile Adhesion Strength
Initial | ≥ 1,0 N/mm2 |
Water immersion | ≥ 1,0 N/mm2 |
Heat ageing | ≥ 1,0 N/mm2 |
Freeze-Thaw cycle | ≥ 1,0 N/mm2 |
Application
Slip Resistance
≤ 0,5 mm | (EN 1308) |
Mixing Ratio
5.6 L of water per 20 kg bag
(28 % ± 1 %)
Fresh mortar density
~1,6 kg/l
Layer Thickness
10 mm max.
Ambient Air Temperature
+5 °C min. / +35 °C max.
Substrate Temperature
+5 °C min. / +35 °C max.
Maturing time
~3 minutes
Pot Life
~6 hours
Open Time
≥ 0,5 N/mm2 after 30 min | (EN 1346) |
Adjustability Time
~50 minutes
Curing Time
12 hours
Curing Treatment
Protect from adverse weather conditions, such as extremely high or freezing temperatures, rain, direct exposure to sun, for at least 12–24 hours from application.
Applied Product Ready for Use
Use | Waiting time |
Grouting - floors including foot traffic | ~24–36 hours |
Grouting - walls | ~4–6 hours |
Full traffic | ~14 days |
Values determined in laboratory conditions: +23 °C ± 2 °C, R.H. 50 % ± 5 %. Higher temperatures will reduce the indicated waiting time, lower temperatures increase waiting time.
Consumption
Consumption is dependent on the substrate, surface profile, roughness, size of the tiles, the joints between them and application technique. (single spreading/floating method or double spreading/buttering method).
As a guide for a single adhesive layer:
Size of tiles | Notched trowel size | Consumption |
Small | 6 mm | ~2,5 kg/m2 |
Medium | 8 mm | ~3 kg/m2 |
Large | 10 mm | ~4 kg/m2 |
MIXING
Important: Avoid over-mixing to minimise air entrainment.
Requirement: Use a low speed electric single paddle mixer (<500 rpm) with spiral paddle for mixing.
- Pour the recommended amount of clean cold water into a clean mixing container.
- Gradually add SikaCeram®-205 Medium powder to the water while mixing.
- Mix thoroughly until a uniformly coloured, smooth mix is achieved.
- Do not mix for 2–3 minutes to allow mixed product to ‘mature’.
- Remix for ~30 seconds.
APPLICATION
Important: Apply sufficient adhesive to ensure adequate ‘wetting’ of the backs of the tiles.
Important: Coverage on the back of the tiles must be 100 %.
Important: Tiling must to be carried out on freshly applied adhesive. Exert adequate pressure to ensure 100 % complete and uniform contact with the adhesive to achieve optimum adhesion.
Important: If a skin forms on the surface of the adhesive, immediately remove the adhesive layer with a trowel, discard material and apply a fresh layer of SikaCeram®-205 Medium adhesive.
Note: SikaCeram®-205 Medium can be used for laying tiles indoors up to 21000 cm2 (45 × 45 cm), and up to 900 cm2 (30 × 30 cm) outdoors.
Note: For large tiles > 900 cm2 (30 × 30 cm), the double-spreading (buttering) technique is always recommended.
- Apply sufficient adhesive to the prepared fixing surfaces with the appropriate trowel / comb or applicator to the required bed thickness.
- Adjust tiles if required.
- Clean off surplus adhesive from tile face and between tile joints before the adhesive has dried.
CLEANING OF TOOLS
Clean all tools and application equipment with water immediately after use. Hardened material can only be mechanically removed.