Description
Mapei Keraflex Maxi S1 Zero Adhesive Grey
– 20kg Bag
Keraflex Maxi S1 Zero is a high performance, deformable cementitious adhesive for
installing ceramic tiles, with extended open time and no vertical slip.
Keraflex Maxi S1 Zero is particularly suitable for installing large format tiles;
highly thixotropic for installing heavy and large format tiles on vertical surfaces
without sagging. Keraflex Maxi S1 Zero contains a very low VOC content that can
contribute valuable points towards Green Star™ credits in compliance with the Green
Building Council of Australia.
Where to Use
- No Vertical Slip
- High Performance
- Low emission level of VOC
- Suitable for laying large porcelain and natural stone tiles.
Where to Use
- Interior and exterior bonding up to 15 mm thick on floors of ceramic tiles
of every type and size (single and double fired tiles, porcelain tiles, klinker,
terracotta, etc.) on uneven substrates and renders, without having to level the
flooring beforehand. - Interior and exterior bonding of stone and agglomerate materials (provided
that they are classified as stable and not irreversibly sensitive to moisture). - Spot bonding of insulating material in interior such as expanded
polystyrene, rock and glass wool, Eraclit® (wood-cement panels), sound-deadening
panels, cork, etc.
Application Examples
- Bonding ceramic tiles (double-fired, single-fired, porcelain tiles,
klinker etc.) and stone materials (provided that they are not sensitive to
moisture) on conventional substrates such as:
– cementitious screeds and underfloor heating and cooling installations;
– cementitious renders or lime and cement-based mortar;
– gypsum board as long as firmly fixed;
– compatible sound insulation membranes.
- Ceramic and stone material tiles on existing flooring (ceramic, marble,
etc.). - Installation of floors subjected to heavy traffic.
- Installation of floor and wall coverings on substrates waterproofed with
Mapelastic AquaDefense, Mapelastic Smart or Mapegum WPS. - Interior and exterior bonding of tiles or strips (porcelain tiles,
klinker, single-fired, terracotta) with highly profiled ribs or lugs.
Technical Characteristics
Keraflex is a grey or white powder composed of cement and graded aggregates. It
contains a high quantity of synthetic resins and special admixtures created
according to a formula developed in MAPEI’s research laboratories. A mortar with
the following features is obtained when mixed with water:
- low viscosity, therefore easily workable
- highly thixotropic: Keraflex Maxi S1 Zero can be applied on a vertical
surface without sagging or letting even heavy and large tiles slip. Tiles can be
installed from the top towards the bottom without using spacer pegs. - Good capability to accomodate the different deformation of the covering
from the substrate. - Perfect adherence to all materials normally used in building.
- Hardens, even when very thickly applied, without appreciable shrinkage and
dimensional changes. - Particularly good extended open and adjustability time, facilitating
installation.
Recommendations
Do NOT use Keraflex Maxi S1 Zero in the following cases:
- on wood and wooden conglomerates;
- on metal, rubber, PVC and linoleum surfaces;
- with marble and natural stone slabs subject to efflorescence or stains;
- with natural or artificial stone material slabs subject to unstable
movement due to moisture; - on precast concrete or substrates subject to excessive movement;
- when surfaces need to be immediately trafficked.
Application Procedure
REFER TO TECHNICAL DATA SHEET PDF (See Specifications – Below)
Tile Installation
It is not necessary to wet the tiles before installation; only in the case of very
dusty backs is washing recommended, by quickly immersing them in clean water.
The tiles must be installed in the normal way, placing them firmly to ensure good
contact with the adhesive.
The open time of Keraflex Maxi S1 Zero in normal conditions of temperature and
humidity, is 30 minutes; unfavourable environmental conditions (strong sunlight,
drying wind, high temperature as well as a highly absorbent substrate), could
drastically reduce this time to a few minutes.
Therefore constantly check that the adhesive has not formed a superficial skin and
is still “fresh”; where there is a formation of a superficial skin, the adhesive
must be reworked with the notched trowel.
Wetting the adhesive after it has produced the skin is not recommended because the
water forms an anti-adhesive film instead of dissolving it.
The “adjustability” of the tiles must be carried out within 60 minutes (at +23°C)
after installation.
Tiles installed with Keraflex Maxi S1 Zero must not be subject to running water or
rain for at least 24 hours and must be protected from frost and strong sunlight for
at least 5-7 days after installation.
Spot Bonding of Insulating Materials
For spot-bonding sound-deadening or insulating panels, apply Keraflex Maxi S1 Zero
with a trowel or a float, in the necessary thickness required by the levelness of
the surfaces and by the weight of the panels.
Grouting and Sealing
Wall joints can be grouted after 4 – 8 hours and floor joints can be grouted after
24 hours.
Depending on the size of the grout joint MAPEI recommends the use of Keracolor FF
for joint widths up to 6 mm or Keracolor GG for joint widths from 4 – 15 mm.
MAPEI also recommends the use of Ultracolor Plus which is a fast setting grout that
contains special additives for water repellency and anti-efflorescence. This
premium grout is available in a vast array of exciting colours.
If the joints need to have good chemical resistance then we recommend the use of an
epoxy grout such as Kerapoxy or Kerapoxy Design which are also available in an
exciting colour palette.
For elastic expansion joints use MAPESIL AC, a single component silicone sealant.
For movement joints in floors designed for heavy traffic contact Mapei Technical
Services on Freecall 1800 652 666 for further advice and information.
Set to Light Foot Traffic
Floors are set to withstand light foot traffic after approx. 24 hours.
Polishing
Surfaces can be polished after approximately 14 days.
Ready for Use
Surfaces are ready for use after approx. 14 days.
Cleaning
Tools and containers should be cleaned with plenty of water while Keraflex Maxi S1
Zero is still fresh.
Surfaces should be cleaned with a damp cloth, before the adhesive dries.
Consumption
Bonding Ceramic Tiles:
– 1.2kg/m2 per mm of thickness
Bonding Panels:
– Applied with a Trowel approx. (Rounded notch): 6-7kg/m2
– Spot-bonding (with a trowel): 4-6kg/m2
Packaging
Keraflex Maxi S1 Zero is available in 20 kg bags.
Storage
When stored in dry conditions in the original, unopened bags, Keraflex Maxi S1 Zero
has a shelf life of 12 months.
If stored at high temperature and or high humidity conditions the shelf life may be
reduced.
Safety Instructions
Keraflex Maxi S1 contains cement that when in contact with sweat or other body
fluids may cause an irritant alkaline reaction or allergic reaction to those
predisposed.
It can cause damage to eyes.
During use wear protective gloves and goggles and take the usual precautions for
handling chemicals.
In case of contact with eyes or skin wash immediately with plenty of water and seek
medical attention.
For further and complete information about the safe use of our product please refer
to our latest version of the Safety Data Sheet, which is available upon request, or
can be downloaded from www.mapei.com.au.
PRODUCT FOR PROFESSIONAL USE
