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Tile adhesives

Powerflex-cementitious one pack flexible rubber based tile adhesive-Technical Data Sheet.

By  Last updated: 18th January 2013

Powerflex-cementitious one pack flexible rubber based tile adhesive-Technical Data Sheet.

Powerflex is a cementitious one pack flexible, fast setting rubber based tile adhesive. It provides extraordinary handling and when mixed with water becomes a smooth creamy paste that is easy to trowel. Powerflex is quick setting while providing excellent adhesion, water resistance, flexibility and bond strength. Grouting can be done in 3 hours.

Powerflex is unsuitable for:

bonding moisture sensitive green marble;
bonding to MDF board, (timber and wax impregnated wood must be sheeted with fibre cement sheeting);
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).

Painted Surfaces : Oil based paints must be in good condition with all flaky paint removed and the surface washed with a commercial cleaner such as Sugar Soap. Acrylic based paints to be treated in the same manner as oil based paint surfaces. PVA based paint surfaces must be scabbled to expose at least 80% of the original substrate. (Refer to Morgan Adhesives)

Tilt Up Slabs : Release agents on the surface can be a problem if not removed properly (e.g. silicone based products, diesel, etc.) liaise with the builder to find out which one has been used and remove it accordingly (e.g. using manufacturer’s directions). Only then can tiling commence.

Tile over Tile : Tiles should be thoroughly cleaned with a commercial cleaner such as Sugar Soap.

Vinyl Flooring : Any loose debris should be removed. Surface should be thoroughly cleaned with a commercial cleaner such as Sugar Soap.

Mixing Powerflex

Add Powerflex to clean water at a ratio of 20 kg to 6 litres of water. Mix product to a smooth paste free from lumps by using a drill that has a speed lower than 300 rpm, or mix by hand. Slacken the adhesive and re-mix after 5 minutes.

Pot Life

Powerflex has a pot life of approximately 1 hour at 20°C and 50% relative humidity.

Open Time

Powerflex has an open time of approximately 30 minutes, 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.


Always install the tiles in accordance with AS 3958 1:1991 and ensure the backs of the tiles are free of dust. Spread Powerflex 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 10 minutes after laying.


20 kgs of Powerflex will cover approximately 8-10 square metres with a 10mm notched trowel for floors and/or 10-12 square metres with a 6mm notched trowel.

Dry Time

Powerflex dries in approximately 3 hours and cured within 24 hours at 23°C and 50% relative humidity. It may require longer times to cure for denser tiles and substrates or at installation temperatures below 10°C.

Expansion Joints

Joint Grouting

Grouting may commence after approximately 3 hours (depending on variables such as sun, heat, wind, etc.)

Shelf Life

Powerflex can be stored in the original packaging in a dry elevated position for 6 months.


Powerflex is available in 20kg, 10kg and 5kg bags and 1kg handyman tubs.


Product Datasheet



Morgan Ceramic Tile Adhesives
11 Raymond Avenue
Bayswater 6053
Western Australia

Telephone +61 8 9272 4666
Facsimile +61 8 9370 1744

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