Davco® Trojan Mastic

12 Months from date of manufacture.

Store in an elevated location in dry cool conditions.

5-5.5 Litres per 20kg Bag

2 hours.

Adhesive may need re-stirring during its pot life

30 minutes at 23°C and 50% relative humidity.

 Specifications vary according to site conditions and should be taken as a guide only.

Approximately 6-7m² per bag with a 10mm notched trowel.

• Mixing drill with stirrer attachment
• Mixing bickets
• Notched trowel

• 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 mechanically prepared to a clean, sound surface. Expose at least 80% of the original substrate of painted surfaces.
• All substrates shall meet minimum deflection standards outlined in Australian standards.
• Concrete shall be cured for a minimum 6 weeks prior to tiling applications.
• Screeds shall be cured for a minimum 7 days.
• Board and sheeted substrates shall be fixed in accordance to the strict manufacturers instructions.

All surfaces shall be primed with a suitable Davco primer.

Porous Substrates primer:

• Davco Ultraprime
• Davco Primex

Dense concrete primer:

• Davco Primex

Non porous primer

• Sika Prep n prime

Refer to the specific technical data sheet for each primer.

No primer required for applications directly over waterproofing membranes.

Mix Process

1. Measure the required amount of clean, potable water into a clean bucket.
2. Slowly add the powder into the water while mixing with a mixing paddle attached to a drill. Always add the powder to the liquid. Do not mix by hand.
3. Continue to mix for several minutes until a creamy consistency is achieved, free of lumps of powder.
4. Allow mixture to stand for 5 minutes, remix then use the adhesive.

• Adhesive may need re-stirring during the adhesive's potlife.
• Once adhesive is mixed do not add additional water.

1. Deposit a quantity of adhesive onto the prepared substrate. Do not apply more adhesive than can be tiled within the open time of the product, usually from a single tile up to around 1m2 at a time.
2. Hold the notched trowel at an angle of 60° or greater to the substrate.
3. Spread the adhesive over the area where tile is to be applied, forming straight rows of adhesive “beads”.
4. Where “back buttering” is required, use the straight side of the trowel to apply a thin covering of adhesive to the back of the tile.
5. Position the tile on the beaded adhesive and press firmly.
6. Move the tile forward and then back at 90° across the direction of the beads to ensure all beads are flattened leaving no voids under the tile. Occasionally lift a tile after placing it to check that the beads are fully compressed and that sufficient coverage has been achieved (90–100%). Replace the tile.
7. After laying a section at a time, remove any excess adhesive from the grout joint and the surface of the tiles with a damp cloth while the adhesive is still wet.

Tools and equipment can be cleaned with water while the adhesive is still wet.