Fliesen mit Format tiles with style Carrelage de ... - petraluxe.de

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Fachverband Fliesen und Naturstein im Zentralverband des Deutschen Baugewerbes
(Natural Stone and Tile Association, a department of the Central Association of the German Construction Industry)
Trade information / 03
Mai 27th, 2010
Large-format ceramic tiles and panels
Application: interior use
Edge length: 60 cm – 120 cm
Minimum thickness: 8 mm
Technical advances and the latest trends have generated
increasingly large tile sizes that often are very thin. In
addition, customers are looking for even ceramic floors with
joint sizes that are as narrow as possible.
With the help of rectification and precise calibration, tiles
and panels today are more dimensionally accurate and
mostly have sharp or chamfered edges. In accordance with
DIN EN 14411, the permissible tolerances of ± 0.5% for
surface, size, rectangularity and edge straightness cannot
fully prevent slight height differences or uneven joint
widths – even with the most careful installation.
In order to lay large-format tiles or panels, the subfloor’s
evenness (to meet DIN 18202 requirements) should be
optimized with an additional screed layer.
The structural conditions of the different subfloors must be
carefully taken into consideration when laying tile.
A calcium-sulphate subfloor is cured when the residual
moisture content is ≤ 0.5 CM % for unheated floors, ≤ 0.3
CM % for heated floors and ≤ 2.0% for cement screed.
The expansion coefficients of cement and calcium-sulphate
subfloors (mastic asphalt) are distinctly higher than those of
ceramic tiles or panels or natural stone.
Because of the low proportion of joints and narrow joint
width, any changes in the subfloor can only be compensated
on a very limited basis. This may result in the need for
additional stress relief measures.
Usually, laying large-format tiles or panels requires a
large-toothed notched trowel in order to apply the required
thin-set mortar. This leads to greater mortar use and also to
more embedded water particles underneath the ceramic or
natural stone tiles.
The information in ‘Beläge auf Calciumsulfatestrich‘ (Laying
tile on calcium-sulphate subfloors) advises installers to
protect the subfloor from moisture penetration when laying
large-format tiles and panels.
Protective measures must be suitable for such applications
and should be used and applied according to the
manufacturer‘s instructions.
For the proper installation of floors using large-format tiles
and panels, please adhere to the following advice carefully.
· Consult the client and, if applicable, the architect
regarding the characteristics of large-format tiles and
panels and the resulting installation requirements,
· smooth out the subfloor with a leveling compound to
increase levelness,
· try to avoid laying the tile in a running bond pattern,
· minimum joint width ≥ 3 mm, due to technical
requirements,
· use smaller field sections for heated areas or floors with
solar exposure (maximum of 5 m per side),
· protect the calcium-sulphate subfloor from moisture
penetration,
· use mortar that conforms to DIN 12004,
· on large-format tiles and panels (0.25 m2 or larger) it is
necessary to apply a layer of mortar on the back side for
better adhesion,
· when installing large-format tiles or panels, the curing
time of the thin-set mortar usually increases. This needs
to be taken into account before walking on the finished
floors.
According to current technical knowledge, when these
recommendations are followed carefully, the proper installation
of flooring using large-format tiles and panels is entirely
possible.
You can view or download our many certifications at our website www.petraluxe.com
Petraluxe GmbH
Siemensstraße 34 · 06449 Aschersleben · Germany
Phone: +49 (0) 3473 - 91 37 40 · Fax: +49 (0) 3473 - 9 13 74 09
e-mail: info@petraluxe.com · Internet: www.petraluxe.com
Last updated: 01.2013
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