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RLA tile adhesives

RLA Flexibond Grey is a non slip, polymer modified thin bed cement based adhesive

By  Last updated: 25th August 2013

RLA Flexibond Grey is a non slip, polymer modified thin bed cement based adhesive.
Ceramic Wall Tile Adhesive
• Flexibond Grey is a non slip, polymer modifi ed thin bed cement based adhesive designed for
bonding most types of ceramic wall tiles onto surfaces that may be subject to limited movement.
• Flexibond Grey can be used internally and externally for most domestic and light commercial
wall tiling applications where the substrate is subject to limited movement e.g. thermal expansion,
fl exing and vibration.
• Flexibond Grey is typically applied to: Concrete, Render, Brickwork, Plasterboards, Fibre
Cement sheets, Plasterboard.
• Flexibond Grey should not be used for laying tiles directly onto timber substrates, for external
fl oor tile applications, or for applications that are subject to total immersion.
• While in most cases Flexibond Grey can be applied directly to the substrate to be tiled, there is
occasionally a requirement to prime the surface fi rst, with Uniprime i.e. on very porous surfaces
such as plasterboard or very dense glossy surfaces.
• In all instances the surface needs to be well fi xed and clean and free from contamination. Special
note should be taken of the fi xing and sealing requirements of the substrate supplier.
• Where waterproofi ng is required, use Miracryl 2 part or Polymer liquid seal.
Expansion/ Movement Joints:
• Expansion/ Movement joints must be provided to allow for movement between adjacent building
components. They should be as follows:
1. Over existing joints in the substrate, where two different substrates meet e.g. Plasterboard and
fi bre cement sheet, at internal vertical corners.
2. On wall surfaces at storey heights horizontally and approx. 3m-4.5m apart vertically.
3. Movement joints should go right through the tile adhesive bed to the background and kept free
from dirt and adhesive droppings. Movement joints must not be less than 6 mm and not wider
than 10 mm. The movement joints must be fi lled with a fl exible sealant like RLA Tilesil coloured
• Flexibond Grey only requires the addition of clean drinkable water. Place the required amount of
water into a clean bucket (allow about 0.6 – 0.8 L per square metre).
• Slowly add the powder to the liquid while stirring and mix until a smooth lump free paste of the
desired consistency is achieved.
• Allow to stand for 5 minutes and re-stir.
• Flexibond Grey is applied to the substrate with a suitable notched trowel (6-10 mm).
• Apply about a square metre at a time and fi rmly pressing the tiles into the adhesive making sure
that the adhesive has not “skinned off”. Any material that has “skinned” or dried excessively
should be scraped off and discarded.

Clean up:
• Excess adhesive on the face of the tiles can be cleaned up with damp cloth while the adhesive is still wet.
• Adhesive that has oozed out into the grout joint must be racked out with a knife/spatula etc. Tools and
other equipment can be cleaned up using water while the adhesive is still wet.
• Coverage will vary depending on the substrate condition and the type of tile but should be approximately
12-14 m2 / 20 Kg bag using a 6 mm trowel.
Grouting Application:
• Generally grouting can be carried out after the adhesive has achieved a fi rm set (24 hours). Use RLA
Coloured Grout, RLA Sanded Grout, or Flexi-groutTM liquid premix.
Packaging/ Shelf Life:
• Flexibond Grey is available in 20 Kg bags.
• A bag of Flexibond Grey, when stored in a cool, dry environment, and is stored above ground level, will
have a shelf life of approximately 12 months.
Handy Tips:
• Do not spread too much Flexibond Grey at a time, as the typical substrates for fi xing wall tiles to are very
absorbent, and the adhesive will skin prematurely.
• Remove all joint spacers prior to tiling.

Source: Flexibond Grey

Flexco (N.Z.) Ltd

Phone: +64 (9) 268 6970 Managing Director: Robert Riedstra
Fax: +64 (9) 268 6971 Financial Controller: Janene Riedstra

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