SikaCeram®-428 Super Bond T

• R2T according to EN 12004-1
• R2T according to ISO 13007-1

Polyurethane resin and selected quartz

12 months from date of production

The product must be stored properly in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +10 °C and +40 °C. Protect from direct sunshine.

All density values at +30 °C.

-20 °C min. / +80 °C max.

Resistant to many chemicals. Contact Sika Technical Services for additional information.

Part A : Part B = 92 : 8 (by weight)

For higher thickness application, please contact Sika Technical Services.

+10 °C min. / +35 °C max.

65 % max.

Beware of condensation. The substrate and uncured applied product must be at least +3 °C above dew point to reduce the risk of condensation or blooming on the surface of the applied product. Low temperatures and high humidity conditions increase the probability of blooming.

+10 °C min. / +35 °C max.

≤ 4 % parts by weight
The following test methods can be used: Sika®-Tramex meter, CM-measurement or Oven-dry-method. No rising moisture according to ASTM (Polyethylene-sheet).

~60 minutes (100 g mass, +30 °C)

~80 minutes at +30 °C

Note: Values are obtained in laboratory condition at +25 °C. 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 (i.e. single spreading / floating method or double spreading / buttering method). Apply product to a test area to calculate the exact consumption for the specific substrate conditions and proposed application.

As a guide for a single adhesive layer:

These figures are theoretical and do not allow for any additional material due to surface porosity, surface profile, variations in level or wastage etc.

MIXING

• Electric single paddle mixer (< 400 rpm) with spiral paddle

APPLICATION

• Notched trowel
• Rubber mallet

Important: Mix full units only

Important: Avoid over-mixing to minimise air entrainment.

1. Add Part B (hardener) to Part A (resin).
2. Mix continuously for 3 minutes, until a uniform mix is achieved.
3. During the final mixing stage, scrape down the sides and bottom of the mixing container with a flat or straight edge trowel at least once to ensure complete mixing.

Important: Apply sufficient adhesive to ensure adequate ‘wetting’ of the backs of the tiles.

Important: Coverage on the back of the tiles must be > 60 %.

Important: Tiling must 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®-428 Super Bond T adhesive.

Important: Protect freshly applied material from extremely high or low (freezing) temperatures, rain, direct exposure to sun, for at least 12–24 hours from application.

Important: Avoid application in direct sunlight and/or strong wind / draughts.

Note: For tiles > 900 cm² (30 × 30 cm), the double-spreading (buttering) technique is always recommended.

1. Apply sufficient adhesive to the prepared fixing surfaces with the flat side of trowel.
2. Comb additional adhesive with appropriate square notched trowel to the required bed thickness.
3. Wherever needed (for large tiles), back butter the tiles for full bedding.
4. Place tiles into wet, sticky adhesive and use rubber mallet to fully embed the tiles.
5. Adjust tiles if required. Provide support wherever needed.
6. Clean off surplus adhesive from tile face and between tile joints before the adhesive has dried.

Clean all tools and application equipment with Sika® Thinner C immediately after use. Hardened material can only be mechanically removed.