* Ready to Use * High Flexibility * Non-Slip * Walls Only
Description
Promastic is a premium pre-mixed mastic adhesive. It is a quick grabbing, non-slip, flexible wall tile adhesive, which allows tiling to begin from any position on the wall. Promastic exceeds the requirements of Australian Standards AS 2358-1990.
| Suitable Tiles | Suitable Substrates | Colour |
| * Natural Stone | * Concrete/Cement Render | White |
| * Bicottura | * Brickwork/Blockwork | Interior | Exterior |
| * Monocottura | * Fibre Cement Sheets (primed) | Walls
| Walls
|
| | * Plasterboard (primed) |
Precautions
Promastic is unsuitable for:
bonding to moisture sensitive green marble;
bonding to painted walls;
bonding to substrates subject to constant water immersion such as swimming pools.
Surface Preparation
All surfaces to be tiled must be flat and true, free from oil, dirt, grease or any other contaminants. Very porous surfaces should be primed with Plastinex (1 part Plastinex mixed with 4 parts water).
Concrete : New concrete must be allowed to cure for 6 weeks and should have a wood flat finish. When finished with a steel trowel, concrete must be acid etched, using Floor Prep.
Cement Render : Render to be left with a wood float finish and allowed to cure for 7 days.
Fibre Cement Sheets : Compressed fibre sheets should be primed with Plastinex (1 part Plastinex mixed with 4 parts water) and all joints to be taped with PVC duct tape and fixed according to manufacturer's instructions.
Plasterboard : Must be fixed as per manufacturer's instructions. Jointing compound must be primed with Plastinex (1 part Plastinex mixed with 4 parts water).
Mixing Promastic
Promastic is pre-mixed and ready for use straight from the container.
Open Time
Promastic has an open time of approximately 1 hour, which can be shortened to just a few minutes by the action of sun, wind, high temperatures or highly absorbent surfaces. Tilers need to constantly check that the adhesive has not formed a surface skin and is still fresh to the touch.
Wetting or priming the substrate prior to tiling prolongs the open time of the adhesive. It is not advisable to wet the adhesive when it has formed a skin as water only increases the rate of cement hydration and will result in an anti adhesive film. Skinned adhesive must always be removed and disposed of.
Application
Always install the tiles in accordance with AS 3958 1:1991 and ensure the backs of the tiles are free of dust. Spread Promastic evenly across one square metre at a time with a 6 x 6 x 6 notched trowel for walls or a 10 x 10 x 10 notched trowel for floors. The choice of trowel should be governed by the depth of the knobs, grooves or ridges on the back of the tile and the evenness of the substrate.
Lay the tiles with a fair pressure and at right angles to the notched pattern.
The final bed of adhesive should be between 2mm and 4mm. Wall tiles should have a finished joint width of 2mm - 4mm and floor files a finished joint width of 3mm - 6mm. Tiles can be adjusted for approximately 40 minutes after laying.
Coverage
22kgs of Promastic will cover approximately 10-12 square metres with a 6mm notched trowel for walls.
Dry Time
Promastic dries in approximately 24 hours at 23oC and 50% relative humidity. It may require longer times to cure for denser tiles and substrates or at installation temperatures below 10oC.
Expansion Joints
Joint Grouting
Grouting may commence after approximately 24 hours (depending on variables such as sun, heat, wind, etc.)
Shelf Life
Promastic can be stored in the original packaging in a dry elevated position for 12 months.
Packaging
Promastic is available in 20kg buckets.
Morgan’s Quality Policy Statement
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Technical Data | Complies with AS 2358-1990 |
Product Identity |
Colour and Type | White thick light paste |
Specific Gravity | 1.3 kg/ltr |
Toxic Hazard | No |
Inflammable | No |
Application Data |
Application temperature range | From +15oC to 35oC |
Open time at 20oC & 60% RH | Approx. 1 hour |
Ready for traffic | After 48 hours |
Cure time | 7 days partial cure 28 days full cure |
Wall grouting | After 24 hours |
Final Performance |
Damp resistance | Excellent |
Ageing resistance | Excellent |
Resistance to solvents and oils | Excellent |
Resistance to acids and alkalis | Good |
Resistance to temperature | From -30oC to +90oC |
Flexibility | High |
Correct procedures for use can be found in AS 3958 1 & 2 and must be followed at all times.
