SikaCeram®-255 StarFlex LD

• VOC emission classification according to French regulation classification A+.

• CE Marking and Declaration of Performance to EN 12004 - Adhesives for Tiles. Classification: C2 TE S1.

EN 12004: C2 TE S1.

Portland cement, selected aggregates, water retention additives, re-dispersible polymer

12 months from date of production

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.

D_max: 0,63 mm

For the following substrates, a primer must be used: 

Tile Adhesive: SikaCeram®-255 StarFlex LD

5.8 Litres of water per 20kg bag  (29% ± 1%)

~1,6 kg/l

15 mm max.

+5 °C min. / +35 °C max.

+5 °C min. / +35 °C max.

~3 minutes

~6 hours

~50 minutes

Values determined at laboratory conditions: +23 °C ± 2 °C, R.H. 50 % ± 5 %. Higher temperatures will reduce the indicated waiting time, lower temperatures increase waiting time.

Consumption is dependent on the substrate, surface profile, roughness, size of the tiles, the joints between them and application technique.

As a guide for a single adhesive layer:

* Square notched

Pour the recommended amount of clean cold water into a suitable, clean mixing container.

Slowly add SikaCeram®-255 StarFlex LD powder to the water while mixing using an electric single paddle mixer (~500 rpm) with spiral paddle. Then mix thoroughly until the material is fully mixed and lump free. Avoid entraining air into the mix by over mixing.

Allow the mixed product to ‘mature’ for 2–3 minutes before remixing for 30 seconds.

The finished mix must have a creamy consistency, be uniformly coloured and is easy to apply and spread.

SikaCeram®-255 StarFlex LD is applied using a suitable notched trowel.

Apply sufficient adhesive to the prepared fixing surface with the appropriate trowel and comb to the required bed thickness. Also apply sufficient adhesive to ensure adequate ‘wetting’ of the backs of the tiles. Coverage on the back of the tiles must  be 100%.

Tiling must to be carried out on freshly applied adhesive, exerting adequate pressure to ensure 100% complete and uniform contact with the adhesive to achieve optimum adhesion.

If a skin forms on the surface of the adhesive, immediately remove the adhesive layer with the trowel, discard material and apply a fresh layer of SikaCeram®-255 StarFlex LD adhesive.

Adjust tiles if required.

Clean off surplus adhesive from tile face and between tile joints before the adhesive has dried.

After the required waiting time, apply the appropriate grout into the tile joints.

SikaCeram®-255 StarFlex LD is suitable for laying absorbent and non-absorbent tiles indoors without any size or support limits.

On cementitious substrates, SikaCeram®-255 StarFlex LD can be used for laying tiles up to 2'100 cm² (e.g.45 x 45) on outside walls, up to 3600 cm² (e.g. 60 × 60 cm) outside on floors or inside on walls and up to 10'000cm² (e.g. 100 x 100 cm) on inside floors.

Large tiles ≥ 900 cm² (e.g. 30 × 30 cm), the double-spreading (buttering) technique is always recommended.

Clean all tools and application equipment after use with water. Hardened material can only be removed mechanically.