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Davco tile adhesives

Davco-Flexible CTA is a white, acrylic based, flexible, premixed, interior, thin bed

By  Last updated: 4th September 2010


Flexible CTA is a white, acrylic based, flexible, premixed,
interior, thin bed, wall tile adhesive.
• Flexible CTA can only be used for interior wall
tiling installations.
• Flexible CTA can be used for thin bed fixing of
tiles directly onto fibrecement sheeting,
plasterboard and rendered walls.
• Flexible CTA can be used to fix most types of
porous ceramic and marble wall tiles, particularly
light coloured marbles, but with the exception of
green marble.
• When using Flexible CTA with translucent/
absorbent tiles, the colour of the adhesive must
be considered.
• Flexible CTA must not be used on floors or
over waterproofing membranes.
• Premixed – ready to use!
• No need for messy mixing making Flexible CTA
very easy to use.
• White in colour so there is no show through in the
grout joint.
• Perfect for bathroom, kitchens and laundry walls.
• Flexible.
• All surfaces must be structurally sound, dry,
clean and free from movement, oil, grease, wax,
curing compounds and any other loose or
contaminating materials.
• All building boards must be flat and firmly fixed
according to the manufacturer’s instructions and
relevant Australian Standard(s).
• Painted surfaces must be scabbled/abraded to
expose at least 80% of the original substrate.
• Newly rendered surfaces must be allowed to
cure for at least 7 days and have a wood float
• Old rendered surfaces must be thoroughly
cleaned prior to tiling and have a wood float
• Porous/dusty surfaces must initially be primed
using Davco Ultraprime.
Movement joints should be provided as follows:
1. Over movement joints in the background.
2. At a junction between different background
3. At fixtures interrupting the tile surface e.g.
4. At internal vertical corners.
5. Around the perimeter of the tiling system.
6. At a maximum of 5 metre intervals in a grid
Note: Movement joints should go right through the tile
and adhesive bed to the background and be kept free
from dirt and adhesive droppings. Movement joints
should not be more than 6mm wide nor greater than
10mm wide. Movement joints that are 6mm wide can
be filled with Davco’s Sanitized® Colorcaulk. For
wider applications use Davco Davsil or polysulphide
and polyurethane type fillers.
• Spread the adhesive onto the substrate using a
6mm x 6mm notched trowel for installation of
tiles up to 150mm x 150mm.
• For the installation of tiles larger than 150mm x
150mm use a 10mm x 10mm notched trowel.
• Tiles with lugs, grooves or an uneven back must
initially be butter coated with the adhesive, in
addition to the adhesive being trowelled onto the
• For mosaic tiles, use a 6mm x 6mm-notched
• A minimum final bed thickness of 2mm is
recommended, but the final bed thickness must
not exceed 4mm.
• Do not spread more than 0.5m2 of adhesive at
one time.
• Press tiles firmly into position before the
adhesive skins, ensuring that all the tiles are well
bedded and that no voids occur under the tiles.
• Occasionally, in order to ensure that full
coverage is being maintained, a tile should be
removed, the adhesive coverage noted and the
tile be relaid accordingly.
• Once the tiles have been laid, they must not be
disturbed for 24 hours at 20oC.

• Grouting can be carried out 24 hours after the
completion of tiling.
• Use the Davco grout that best suits the tiling
installation. Refer to the Davco Adhesive and
Grout Selection Guide for further information.
• To enhance colour, increase water resistance
and flexibility of the grout, use Davco Grout
Additive. This is particularly recommended
when grouting over timber or fibre cement
sheeted floors, to minimise the likelihood of the
grout cracking/powdering.
• Allow 24 hours after grouting before putting the
area into service.
• Do not apply Flexible CTA in temperatures
above 40oC or below 5oC.
• Do not allow the adhesive to skin prior to laying
the tiles. If the adhesive skins, remove and
dispose of it, then re-apply fresh adhesive.
• Do not use Flexible CTA over impervious
surfaces (i.e. waterproofing membranes) or to
bond low porosity tiles.
• Flexible CTA is not suitable for fixing tiles
externally or onto floors.
• Flexible CTA is not suitable is not suitable for the
tiling of areas where continual
dampness/immersion occurs, such as shower
recess bases, swimming pools, spas, etc.
• For other uses or the use of Flexible CTA over
substrates/situations not mentioned in these
instructions, contact your ParexDavco (Australia)
Pty Ltd Materials state office.
• For a full MSDS on this product, contact your
ParexDavco (Australia) Pty Ltd state office.
One litre of Flexible CTA covers approximately
0.75m2 using a 6mm x 6mm notched trowel.
• Remove any excess adhesive from the face of
the tiles with a damp cloth, while the adhesive is
still wet.
• Clean tools and equipment with water before the
adhesive dries.
Flexible CTA is available in 500ml, 1L, 4L, 10L and
15L, containers.
Flexible CTA in unopened containers, has a shelf
life of up to 12 months, stored in a cool, dry place.
Appearance: White Paste
Specific Gravity: 1.65 kg/L
Open Time at 20oC: 5 minutes
Adjustment Time at 20oC: 15 minutes
Curing Time at 20oC: 24 hours
The use of this product is beyond the manufacturer’s control, and
liability is restricted to the replacement of material proven faulty. The
manufacturer is not responsible for any loss or damage arising from
incorrect usage. All workmanship must be carried out in accordance
with AS 3958.1 – 1991.
The information contained herein is to the best of our knowledge true
and accurate. No warranty is implied or given as to its completeness or
accuracy in describing the performance or suitability of the product for a
particular application. Users are asked to check that the literature in
their possession is the latest issue.


Toll Free Technical Advice
1800 653 347
67 Elizabeth Street
Wetherill Park NSW 2164
Tel:  (02) 9616 3000
Fax:  (02) 9725 5551    QUEENSLAND
6 Mackie Way
Brendale QLD 4500
Tel:  (07) 3205 5677
Fax:  (07) 3205 3443
PO Box 4426 Dandenong Sth Business Centre
Dandenong VIC 3175
Tel:  (03) 8791 8300
Fax:  (03) 8791 8399     WESTERN AUSTRALIA
65 Challenge Boulevarde
Enterprise Park Wangara WA 6065
Tel:  (08) 9302 1466
Fax:  (08) 9302 1174
Unit C
Day Avenue
Ashford SA 5035
Tel:  (08) 8371 3511
Fax:  (08) 8371 3577

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