Description
Mapei Ultralite S1 Flex White Adhesive
– 13.5kg Bag
One-component, high-performance, deformable, lightweight, white cementitious
adhesive with no vertical slip, extended open time, and extremely high yield. Easy
to apply by trowel with high back-buttering capacities for ceramic and stone tiles.
Ideal for large-format tiles.
Classification According to EN12004
Ultralite S1 Flex is a C2TES1-class cementitious (C), improved (2), slip-resistant
(T), extended open time (E), deformable (S1) adhesive. The conformity of Ultralite
S1 Flex is declared in TT certificate n. 21/32301609 and n. 21/32301610 issued by
the APPLUS, LGAI Technological Center Bellaterra (Spain).
Where to Use
- Bonding all types and sizes of ceramic tiles (double-fired, single-
fired, porcelain, clinker, terracotta, etc.) on interior and exterior substrates. - Bonding all types of mosaic on interior and exterior surfaces, also in
swimming pools. - Bonding stone tiles on interior and exterior surfaces (as long as the
stone material is not sensitive to moisture and staining). - Bonding large format porcelain tiles, also thin porcelain tiles on
floors, specifically on large surface areas: due to the high back-buttering
capacity, the formation of voids between the substrate and the tile is limited. - Bonding on interior and exterior walls, including exterior facades.
Application Examples
- Bonding ceramic tiles (porcelain, clinker, double-fired, single-fired,
etc.), ceramic and glass mosaic, stone tiles (as long as not sensitive to moisture)
and thin and large format porcelain tiles on the following substrates: - Installing ceramic and natural stone tiles on existing floors (ceramic,
marble, etc.) and after priming with Eco Prim Grip. - Installing tiles on marine plywood, particleboard, existing wooden
Floors (as long as they are stable) and after priming with Eco Prim Grip. - Installing ceramic and natural stone tiles in balconies, terraces, flat
roofs subject to direct sunlight and or temperature swings. - Installing tiles on precast concrete walls and concrete substrates.
- Installing tiles in swimming pools and tanks.
- self-levelling compounds and screeds (including heated);
- stable and cured concrete floors;
- cementitious render and lime-mortar render;
- gypsum-based render (after the application of an acrylic primer
such as Primer G or Eco Prim T Plus);
- plasterboard, walls made of fibre cement panels, precast wall
panels;
- Mapeguard Board, multi-purpose construction panels;
- Mapelastic Smart, Mapelastic AquaDefense, Aquaflex WPU, or Mapegum
WPS waterproofing membranes; waterproofing and uncoupling, anti-fracture, membranes
from the Mapeguard range.
Technical Characteristics
Ultralite S1 Flex is a white powder made of cement, selected graded sand and a high
amount of synthetic resins, admixed with lightweight, natural aggregates that make
the mix lighter, according to a special formula developed in MAPEI Research &
Development labs.
Ultralite S1 Flex Zero is a product with very low emission of volatile organic
compounds (VOC), which safeguards the health and safety of installers and final
users. It is certified as EC1 Plus by the German association GEV.
Ultralite S1 Flex helps earn important LEED credits.
Ultralite S1 Flex offers the following advantages:
- The special formulation used to manufacture Ultralite S1 Flex gives it a
low density, a characteristic which offers two main advantages: - Ultralite S1 Flex has a low viscosity, which makes application quicker
and easier. Despite the above characteristics, the thixotropic nature of Ultralite
S1 Flex means there is no vertical slip when installing tiles on walls, even with
large-format tiles. - Its excellent back-buttering properties and thixotropic consistency make
Ultralite S1 Flex particularly suitable for laying thin porcelain tiles. The
application of Ultralite S1 Flex using the back-buttering technique on flat
substrates ensures that there are absolutely no voids in the adhesive on the back
of the tiles, thus avoiding the risk of fracture when in service. - Its excellent non-slip properties also make it particularly easy and
safe to install tiles on vertical surfaces
- Bags of Ultralite S1 Flex have the same volume but weigh less (13.5
kg) than bags of conventional cementitious adhesive (20 kg). This means less effort
for the workers, as the bags are easier to handle on the construction site and
storage warehouses. Furthermore, lightweight leads to clear benefits in terms of
reduced transport costs: indeed, one pallet of Ultralite S1 Flex Zero weighs 750 kg
while one pallet of conventional adhesive weighs 1250 kg.
- higher yield: each 13.5 kg bag of Ultralite S1 Flex has
approximately the same yield (in terms of square metres of tiles installed with the
same type of trowel, installation technique and substrate) as that of 20 kg bags of
conventional MAPEI cementitious adhesives
When mixed with water, Ultralite S1 Flex forms a mortar with the following
characteristics:
- excellent capacity of absorbing deformation in the substrate and tiles;
- excellent back-buttering properties;
- perfect bond to all materials normally used in the building industry;
- particularly extended adjustment and open time to make installation
easier.
Recommendations
Do NOT use Ultralite S1 Flex in the following cases:
- on metal, rubber, PVC and linoleum substrates.
- for slabs of marble and natural stone subject to efflorescence or
staining on metal. - for natural or agglomerate stone subject to moisture expansion.
- when the floored surface must set to foot traffic quickly.
Do not add water to the mix once it starts to set,
Application Procedure
REFER TO TECHNICAL DATA SHEET PDF (See Specifications – Below)
Grouting and Sealing
Tile joints may be grouted after 4 to 8 hours on walls and after 24 hours on
floors.
Use a MAPEI cementitious or epoxy grout, available in a wide variety of colours.
Expansion Joints must be sealed using a suitable MAPEI sealant.
If necessary, clean, maintain and protect the surfaces using the specific products
from the UltraCare range.
Set to Light Foot Traffic
The floors are set to light foot traffic after approximately 24 hours.
Ready for Use
Surfaces are ready-for use after approximately 14 days.
Tanks and swimming pools can be filled after waiting at least 21 days.
Cleaning
Clean tools and containers with plenty of water while Ultralite S1 Flex is still
fresh.
Clean the surfaces of tiles with a damp cloth before the adhesive hardens.
Packaging
Grey Ultralite S1 Flex is available in 13.5 kg paper bags.
Consumption
0.8 kg/m² per mm of thickness, equal to:
- 1.5 kg/m² for the installation of uncoupling or waterproofing membranes
(using a 5 mm notched trowel); - 2-3.5 kg/m² for the installation of tiles (depending on the type of
trowel selected according to the size of the tiles)
NOTE:
Coverages shown are approximate and are given for estimating purposes only.
Actual job-site coverages may vary according to the tile size and thickness, job
conditions and setting practices.
For coverage values contact MAPEI’s Technical Services Department on 1800 652 666.
Storage
Ultralite S1 Flex may be stored for 12 months in its original packaging in a dry area.
Safety Instructions
Instructions for the safe use of Mapei products can be found on the latest version
of the Safety Data Sheet, available from the Mapei website at www.mapei.com.au
PRODUCT FOR PROFESSIONAL USE
