SikaCeram®-669

SikaCeram®-669 is classified as C2TE in compliance with EN 12004.

SikaCeram®-669 is a cementitious adhesive (C) with improved adhesion (2), slip resistance (T), and extended open time (E).

9 months from date of production

Store properly in dry conditions, in undamaged and unopened, original sealed packaging. Keep away from direct sunlight, rain, water and moisture.

 5.75–6.5 L of water per 25 kg bag

3 mm min. / 10 mm max.

+5 °C min. / +40 °C max.

+5 °C min. / +40 °C max.

~1 hour

Under unfavourable conditions (direct sun, high ambient temperature and strong wind), the open time may be shorter.

At +25 °C

Once the tiles are placed into the mortar, they can be adjusted for ~30 minutes (at +20 °C).

This depends on the level, profile and surface roughness of the substrate, the size of the tiles and the technique of placing (simple placing or "back"-buttering).

As a guide, in kilogram of powder per m² on flat surfaces:

The consumption above may only serve as a guide. It is highly recommended to carry-out trials on site to determine the actual coverage.

Mix thoroughly with the recommended amount of clean water for a minimum of 3 minutes until a homogeneous, lump-free consistency is achieved. Allow the mixture to stand in the container for approximately 5 minutes, then remix for about 15 seconds before use.

SikaCeram®-669 must be mechanically mixed using a forced-action mixer or in a clean container using a low-speed electric drill fitted with a suitable mortar mixing paddle (< 500 rpm).

SikaCeram®-669 is spread onto the substrate using a proper and suitable notched trowel. The choice of trowel should be governed by the size of the tiles, depth of knobs, grooves or ridges on the back of the tiles and the evenness of the substrate.

Use the flat side of the notched trowel to spread the mix onto the receiving surface at approximately 1 m² at a time. Then, use the notched side of the trowel to apply the required amount of the mix in one direction. Press the tile in a perpendicular motion and tapped into position to ensure positive contact with the adhesive and adjust within 30 minutes.

For tile with grooves or ridges, it is necessary to skim a layer of adhesive / butter coat the back of the tiles. This is to ensure adequate material and good bonding between the adhesive and tile.

Ensure that the adhesive is wet when the tiles are laid. Do not allow the adhesive to skin-over prior to tilling. Should skinning occur, break the skin by re-trowelling the adhesive in the opposite direction.

Do not spread more than 1 m² at any one time. Fix tiles within 15 minutes of applying the adhesive and check the contact by occasionally lifting the tiles. Ensure there are no voids under the tiles and the edges between the tiles are even (lippage) with a consistent joint width.

The final adhesive bed thickness of SikaCeram®-669 should be minimum 3 mm and maximum 10 mm. After completion of tiling works, do not disturb the tiled surface for at least 6–8 hours at +20 °C.

As a guide:

SikaCeram®-669 is suitable for fixing absorbent tiles up to a maximum size of 10 000 cm² (e.g. 60 × 120 cm) for internal floors, and up to 1800 cm² (e.g. 30 × 60 cm) for internal walls and external floor applications.

For external areas, protect from direct sunlight and rain by means of a shelter. It is the user’s responsibility to determine the condition and suitability of all surfaces prior to application.

GROUTING

Tile joint grouting should preferably be carried-out at least 24 hours after completion of tiling or until the adhesive has set and dry sufficiently. Setting may be delayed on dense or impervious surface.

Clean all tools and application equipment’s with clean water immediately after use. Hardened or cured material can only be removed mechanically.