All surfaces must be installed according to manufacturer’s instructions and relevant Australian Standard(s) and be structurally sound, dry, clean and free from movement, oil, grease, wax, sealers, curing compounds, release agents and any other loose or contaminating material. Thoroughly clean old surfaces, or new surfaces that have been treated, prior to tiling. Deeply contaminated surfaces must be prepared/abraded to a clean, sound surface. Expose at least 80% of the original substrate of painted surfaces. Substrates shall meet relevant deflection standards outlined in the relevant Australian Standards (AS3958:2023).
CONCRETE SUBSTRATES:
New concrete shall be 7 days old and be left with a wood float finish. Steel trowel finished concrete is generally acceptable if the concrete allows water penetration. Concrete above 35MPa shall be mechanically prepared.
CEMENT BOARD AND SHEETING:
All boards and sheets must be fixed in accordance with the manufacturer's instructions and specifically designed for tiling.
SCREEDS & MORTAR BEDS:
Sand cement screeds must be installed as per relevant Australian Standards and left for a minimum 24 hours prior to tiling. Screeds may need longer drying time in cold climates.
TILE ON TILE APPLICATIONS:
Ensure all existing tiles are firmly fixed, loose or hollow tiles must be removed and the area repaired using a suitable Sika repair mortar. Existing tiles shall be adequately cleaned prior to the application of the primer. Existing tiles shall be primed with SikaTile 015 Prep n Prime and allowed to dry prior to tiling.