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CONSTRUCT
C3 Shopfitting
C3.2 Ceramic Tiling
For all future projects, ceramic tiles are to be laid There is an associated Ardex guarantee in place
using X77 and X78 wall and floor tile adhesives, for their products. Ardex have also offered to
manufactured by Ardex and supplied by provide training for any PM’s or site managers,
Vogue. The S16 adhesive with the E90 admix in order to ensure the recommended processes
as previously specified is to be no longer used. are followed.
Together with the change of adhesive, P4
primer is also specified for use when preparing Tiling must be set out and installed as indicated
the existing floor. on the designer’s floor setting out drawing
including (where applicable) the feature
Poor adhesion between the old floor tiles and curved section.
the new floor tiles is caused by the floor not
being degreased. By doing this it allows the In the PSP scheme it is critical that the two feature
adhesive to achieve a stronger bond. The P4 curves are installed as the designer’s detail
primer which has been specified leaves a rough and that they are separated by the indicated
surface to the existing floor which allows for a number of full tiles. Discretion will be given to the
better bond. contractor for further setting out issues ensuring
minimal number of cuts and dealing with any
The specified X77 and X78 adhesives are single expansion joints that may exist.
part resins, and therefore require no separate
admix. This is deemed a significant advantage, All tiles must be laid with 4mm grout joints
as it ensures the correct mix, thus improving the throughout. Grouting of the joints between
bond. tiles must be complete as soon as the bedding
has set and hardened sufficiently to allow foot
The X77 used for wall tiling is not a rapid setting traffic. All joints must be solid filled.
adhesive. Feedback from the tiling contractors
has been recognised, as the S16 and E90 was Any floors with deviation of levels or
reported to be setting too quickly. Again, this considerable cracking of tiles must be discussed
will allow for a better bond. and additional specification agreed with the
McDonald’s PM. Following this discussion, if it is
Products to be used (Tile on Tile): felt that the floor substrate is suitable and excess
Floors cracking has been a failure in the tiles then a
Primer P4, Floor Adhesive Ardex X78, Degreaser Schluter DITRA matting must be installed as
Ardex DGR, Grout manufacturers detail.
Walls
Wall Adhesive Ardex X77, Degreaser Ardex Floors may only be over tiled once. The principal
DGR, Grout contractor must check early in their site visits
(NB: For Tile on Plywood: Use Primer P51 instead if the existing floors have been over tiled and
of Primer P4) inform the McDonald’s PM and the designer.
Where floors have been previously over tiled,
the tiles must be removed before the new tiles
installed.
C3.2 Ceramic Tiling 2.0 09 January 2015
