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Tile adhesives


Flexmaster-pre-mixed mastic adhesive for absorbent type ceramic tiles-Technical Data Sheet.

By  Last updated: 23rd April 2011

Flexmaster-pre-mixed mastic adhesive for absorbent type ceramic tiles-Technical Data Sheet.

Description.

Flexmaster is a pre-mixed mastic adhesive for bonding absorbent type ceramic tiles. It is a water resistant, white, thin bed adhesive. It has been specifically formulated mainly for fixing interior ceramic wall tiles over sheeted wall systems (fibre cement, gypsum, etc.) and in some exterior applications.
Precautions

Flexmaster 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 (i 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 Flexmaster

Flexmaster is pre-mixed and ready for use straight from the container.

Open Time

Flexmaster has an open time of approximately 40 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.

Application

Always install the tiles in accordance with AS 3958 1:1991 and ensure the backs of the tiles are free of dust. Spread Flexmaster 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. 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. Tiles can be adjusted for approximately 40 minutes after laying.

Coverage

6kgs of Flexmaster will cover approximately 3 square metres with a 6mm notched trowel for walls.

Dry Time

Flexmaster dries in approximately 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 24 hours (depending on variables such as sun, heat, wind, etc.)

Shelf Life

Flexmaster can be stored in the original packaging in a dry elevated position for 12 months.

Packaging

Flexmaster is available in 6kg and 1.6kg containers.

Guarantee

Product Datasheet

 

 

Morgan Ceramic Tile Adhesives

http://www.morganadhesives.com.au
11 Raymond Avenue
Bayswater 6053
Western Australia

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

accounts@morganadhesives.com.au

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