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Tiling adhesives


Flexibond -non slip, polymer modified thin bed cement based adhesive

By  Last updated: 25th June 2013

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

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

Source: Flexibond

Flexco (N.Z.) Ltd

Phone: +64 (9) 268 6970 Managing Director: Robert Riedstra
Fax: +64 (9) 268 6971 Financial Controller: Janene Riedstra
Email: flexco@xtra.co.nz  


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