white, thick-coat deformable adhesive 4-20 mm (C2E S1 type)

P2  na podłogi P2 na podłogi
P3  do wewnątrz P3 do wewnątrz
P4  na zewnątrz P4 na zewnątrz
W1  mrozoodporność W1 mrozoodporność
W2  wodoodporność W2 wodoodporność
D3 wejście po 24h D3 wejście po 24h
N2  paca stalowa zębata N2 paca stalowa zębata
i  silnie wiąże gres z podłożem i silnie wiąże gres z podłożem
N14  wylewanie ręczne N14 wylewanie ręczne
D2 grubość na podłodze 4-20mm D2 grubość na podłodze 4-20mm
g  do płytek wielkoformatowych g do płytek wielkoformatowych

Product description

The polymer technology is used in the ATLAS PLUS MEGA WHITE recipe. Owing to the high content of redispersible polymer resins, the cement adhesive gets unique properties and offers the highest technical and operation parameters assuring long term durability. The presence of polymers ensures high bonding of any cladding to any substrate type, including, so called, difficult and critical ones. Owing to the interchange of the polymer network with the network of inorganic hydration cement bindings, the adhesive offers outstanding parameters. In combination with specially selected aggregate the adhesive offers full spreading and filling the space beneath a tile – thixotropic effect. The content of white cement limits the risk of the discolouration of the cladding.

Main properties

  • for any type of ceramic, stone, glass cladding, composite panels
  • for large size tiles (> 1 m²)
  • for difficult substrates: floor heating, terrazzo, OSB boards, old tiles, wooden floors, metal and plastic surfaces
  • for thin- and thick-coat tiling
  • for substrates requiring unevenness correction with full adhesive spreading beneath a tile
  • on terraces, balconies, in pools and technological tanks
  • for residential, commercial and service, public access and industrial buildings
  • with white cement, which does not cause cladding discolouration which can occur in contact with grey cement

Main parameters

  • consumption: approx. 1.5 kg of dry mix / 1 m² / 1 mm adhesive layer
  • deformability S1
  • adhesive thickness: 4 - 20 mm
  • high bonding: ≥ 1 N/mm²


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The use of the polymer technology gives:
• possibility of fixing the cladding of any type, both absorbable and non-absorbable – owing to high bonding resulting from high content of the polymer resin,
• possibility of fixing the tiles on, so called, difficult substrates, including heated screeds, wooden floors, OSB boards, terrazzo, old tiles (tile on tile) as well as substrates subject to large and very large mechanical and thermal load – owing to the deformability,
• outstanding plasticity and mass homogeneity – the adhesive is easily workable and spread upon the surface – the adhesion strength prevents the adhesive from “rolling back” onto the trowel and thixotropic properties make the tiles stably fixed and eliminate the phenomenon of the tile pulling during fixing as well as the adhesive setting and drying.
Reinforcement with fibers
• the structural reinforcement with cellulose fibers helps to compensate the stress occurring on deformable substrates.
• the fibers improve water retention of the adhesive: limit the effects of sudden water retention both within the joint with absorbable substrate and absorbable tile as well as within the evaporation zone. During the adhesive setting and drying (particularly when applied with maximum thickness) the fibers accumulate and transfer water keeping its uniform level within the whole coat.


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Fixing ceramic and stone cladding of any type.

glazed tiles
porcelain-gres tiles
marble/ natural stone cladding
ceramic mosaic
glass mosaic *
glass tiles *
concrete/ cement tiles
laminated porcelain-gres tiles
composite panels
insulation and acoustic panels
*if in doubt conduct an application test.

 Fixing small, medium and large size claddings.

small and medium size tiles (< 0.1 m²)
large size tiles (< 0.25 m²)
very large size tiles (> 0.25 m²)
slim-type tiles

 Fixing the cladding on horizontal surfaces, indoors and outdoors.

public access, office, healthcare
commercial and service
industrial construction and multi-storey garages
industrial warehouses
kitchen, bathroom, laundry, garage
terraces, balconies, loggia
showers, washes, rooms washed with plenty of water
communication routes
rooms of small and medium operation load in any building type
rooms of medium operation load
façades (incl. ETICS systems)
technological tanks, pools, fountains, jacuzzi, balneotechnology (with no aggressive chemicals in use)
external stairs
drinking water reservoirs
sauna, SPA

 Fixing the cladding on standard substrates.

cement screeds and mortars
anhydrite screeds
cement, cement-lime and gypsum plasters
walls made of cellular concrete
walls made of silicate brick or hollow blocks
walls made of ceramic brick or hollow blocks
walls made of gypsum blocks

 Fixing the cladding on deformable substrates or, so called, difficult substrates.

elastic and rigid damp proofing, e.g. WODER S, WODER E, WODER W or WODER DUO
magnesium substrates
dry substrates made of gypsum boards
screeds (cement and anhydrite) with water and electric heating system embedded
screeds with heating mats embedded in the adhesive
plasters with wall heating system
gypsum-fibre boards
cement-fibre boards
existing ceramic and stone cladding (“tile on tile”)
concrete resin lacquers bonded to the substrate
dispersion, oil paints bonded to the substrate
mineral, dispersion and reactive sealing coats
wooden floors (thick. >25 mm)
OSB/3 and OSB/4 and chipboards on floors (thick. >25 mm)
insulation and acoustic panels
metal and steel surfaces
plastic surfaces*
mastic asphalt screeds
*test application required.


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ATLAS PLUS MEGA WHITE is manufactured as a dry mix of high quality cement binder, aggregates and special composition of modifiers.
Does not cause cladding discolouration – perfect for fixing natural stone and tiles prone to discolouration – owing to high bonding and white cement.
Highly flexible – deformability S1 – the permissible deflection of the set adhesive is within 2.5 – 5 mm range (test according to PN-EN 12002).
With improved bonding – the actual bonding to concrete substrate in standard conditions is two times higher than the one required by the PN-EN 12004 standard.
2 in 1levels the substrate and fixes the tiles simultaneously – it’s a thick-coat adhesive (coat thickness up to 2 cm), eliminates the need of leveling screed installation.
Extended open time - allows placing the tiles even 30 minutes since the mortar application – it can be once applied onto larger surface and therefore minimize the time of work.
Fills full space beneath a tile – eliminates air gaps, limits water accumulation outdoors (freezing water loosens the tiles), ensures appropriate thermal performance of heated floors (air gaps isolate the heat flow).
Ensures full support of large size tiles – eliminates the risk of cracking resulting from impact or stress.
Slight slopes within the adhesive coat can be formed – plastic consistency of the adhesive and wide range of thickness supported with the thixotropic properties enables slight slopes forming.
Recommended for fixing floor tiles in any building type, wherever full filling the space beneath a tile is required. Does not cause the tile pulling phenomenon during the adhesive setting and drying.


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Mass bulk density (after mixing)
approx. 1.95 kg/dm³
Mixing ratio (water/dry mix)
0.21 – 0.24 l / 1 kg
5.25 - 6.00 l / 25 kg
Min./max. adhesive thickness
4 mm / 20 mm
Adhesive preparation temperature, substrate
and ambient temperature during work
from +5°C to +25°C
Maturing time
approx. 5 minutes
Pot life*
approx. 4 hours
Open time*
min. 30 minutes
Adjustability time*
approx. 10 minutes
Floor access/ grouting*
after approx. 24 hours
Full operation load – foot traffic*
after 3 days
Full operation load – vehicle traffic*
after 14 days
Floor heating (warm surface)*
after 14 days
The time shown in the table is recommended for the application in the temperature 23°C and humidity 55% (approx.).


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The product conforms to PN-EN 12004 + A1:2012 standard for C2E S1 class adhesive. EC Declaration of Performance No. 089/CPR.

2007, 0767
PN-EN 12004 + A1:2012
(EN 12004:2007 + A1:2012)
Cement adhesive for tiles of enhanced parameters,
extended open time, deformable
C2E S1 type
for indoor and outdoor use,
for walls and floors
Reaction to fire – class
Bonding strength
- initial bonding
≥ 1.0 N/mm²
Durability - bonding after:
- heat exposure
- immersion in water
- freeze-thaw cycles
≥ 1.0 N/mm²
≥ 1.0 N/mm²
≥ 1.0 N/mm²
Open time - tensile adhesion after time not shorter than 30 minutes
≥ 0.5 N/mm²
≤ 0.5 mm
Transverse deformation
≥ 2.5 mm and < 5 mm
Release/content of hazardous substances
See: Safety Data Sheet
The product has been given the Hygienic Attest and the Radiation Hygiene Certificate.


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Substrate preparation
The substrate should be:
stable – sufficiently sound, resistant to deformation, free from materials which would impair adhesion, stabilized.
even – maximum adhesive thickness is 20 mm, in case of larger irregularities use, e.g. ATLAS ZW 330 mortar, screeds ATLAS SMS, SAM, POSTAR.
clean – free from layers which can impair adhesion, especially dust, dirt, lime, oils, greases, wax, residues of oil and emulsion paints. The substrate coated with algae, fungi, etc. must be cleaned and protected with ATLAS MYKOS agent.
primed with:
- ATLAS UNI-GRUNT or ATLAS UNI-GRUNT PLUS – substrates of excessive or heterogenous absorptiveness,
- ATLAS GRUNTO-PLAST – if the substrate absorptivity is low, or it is coated with layers limiting the adhesion.
Detailed guidelines concerning the substrate preparation, depending on its type.

Substrate type
Fresh cement screeds ATLAS POSTAR 80, ATLAS SMS 15 or ATLAS SMS 30
Stabilized min. 24 hours; optimum moisture content < 4% by weight.
Fresh cement screeds ATLAS POSTAR 20
Stabilized min. 5 days; optimum moisture content < 4% by weight.
Other cement screeds
Stabilized min. 28 days; optimum moisture content < 4% by weight. Prime with ATLAS UNI-GRUNT or ATLAS UNI-GRUNT PLUS.
Anhydrite screeds ATLAS SAM 55, ATLAS SAM 100, ATLAS SAM 150, ATLAS SAM 200 and ATLAS SAM 500
Stabilized min. 2-3 weeks; optimum moisture content < 0.5% by weight. Prime with ATLAS UNI-GRUNT or ATLAS UNI-GRUNT PLUS. If, white surface tarnish forms during drying, it should be removed mechanically (grinded) and the surface dusted. Screed grinding accelerates the drying time.
Cement and anhydrite screeds on floor heating
Appropriately heated and primed with ATLAS UNI-GRUNT or ATLAS UNI-GRUNT PLUS.
De-grease the surface thoroughly, in case of waxed terrazzo remove the top layer or whole layer and execute a new one.
Stabilized min. 21 days; optimum moisture content < 4% by weight. Remove remains of formwork oils and other substances which would impair adhesion obligatorily. Holes, cracks and other gaps should be filled with ATLAS BETONER system mortars.
Concrete reservoirs for drinking water, technological tanks, pool basins, made of watertight concrete
Grinding, sanding or wet sanding required in order to open the surface pores.
Water reservoirs, pool basins, wading pools, etc., surfaces proofed with elastic mortars or liquid foils
If required, clean the waterproofing coat delicately, make sure it’s not damaged.
Oil paints and resin lacquers coatings
Coatings of poor bonding to the substrate should be mechanically removed. Stable, well bonded coatings: grind, dust; prime oil coatings with ATLAS GRUNTO-PLAST. Gypsum fillers which the substrate used to be evened with should be removed.
Mastic asphalt screeds (thickened by rolling) and magnesium substrates
Sanding required.
Wooden floors (thick. > 25 mm), OSB and chip boards (thick. > 22 mm)
Grinding, dusting and priming with ATLAS GRUNTO-PLAST required.
OSB boards and wooden floors – the layer composition should be designed and executed in the way excluding the possibility of deformation, which may lead to the cladding damage.
-    check the boards type, on floors one may use boards OSB/3 and OSB/4 (acc. to PN-EN 300:2007), min. 25 mm thick,
-    check the superstructure stability, the boards must not move under operation load; fix additional, stiffening boards layer, if needed,
-    matt the surface with 40-60 sand paper,
-    dust the surface,
-    in order to improve the board protection against moisture and improve the bonding, apply the liquid foil ATLAS WODER W or ATLAS WODER E, alternatively use priming mass ATLAS GRUNTO-PLAST in order to improve the bonding.
Existing ceramic or stone tiles
-    check the adhesion to the substrate of the existing cladding by tapping; individual loosening tiles must be removed,
-    clean and de-grease the existing tiles surface,
-    matt glazed tiles with a diamond grinder,
-    dust the surface.
Metal and steel surfaces
Cleaning and derusting required, prime with appropriate primer. Blind the freshly applied primer with dry quartz sand.
Plastic surfaces
Cleaning, grinding and priming with ATLAS GRUNTO-PLAST required. Perform the bonding test prior to the cladding fixing in order to confirm the plastic substrate binding ability.
Insulation and acoustic panels
In case of panels with base coat reinforced with mesh, substrate preparation is not required.
*The time shown in the table is recommended for the application in the temperature 20°C and humidity 50% (approx.).

 Adhesive preparation
Pour the adhesive from the bag into a container with the suitable amount of water (see Technical Data for ratio) and mix, using a low speed mixer with a drill for mortars, until homogenous. The dispersed adhesive should be left to rest for 5 minutes and then remixed. So prepared adhesive should be used up within approx. 4 hours.
Adhesive application
The adhesive should be applied onto the surface with a flat steel trowel and then distributed evenly and shaped (possibly in one direction) using a notched trowel. It is advisable to spread a thin adhesive coat first and then apply the coat of desired thickness and shape it with a notched trowel. It is recommended to lead a notched trowel in one direction.
Installing the tiles
After the application, the adhesive retains its properties for approx. 30 minutes (in temperature approx. 23 °C and 55 % humidity). Within this time, the tile must be placed and pressed well. Remove the excess of the adhesive pressed into the joints immediately. Keep the joint width appropriate for the tile size and operation conditions (check data in the sheets of ATLAS grouts).
Tile adjustment
The position of a tile can be adjusted with delicate moves along the bonding plane. It can be done within approximately 10 minutes since the tile is pressed (in temperature approx. 23 °C and 55 % humidity).
Grouting and cladding use
Foot traffic and grouting with ATLAS GROUT, ATLAS ARTIS GROUT, ATLAS DECORATIVE GROUT or ATLAS EPOXY GROUT can start after approx. 24 hours since the tiles fixing. The mortar reaches the operational strength after 3 days (check the Technical Data). Expansion joints, joints along the wall corners, at sanitary equipment, etc. should be filled with sanitary silicone ATLAS SILTON S or ATLAS ARTIS.


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Average consumption: approx. 1.5 kg of dry mix / 1 m² / 1 mm adhesive layer – for complete filling the space beneath the tile. It depends on the smoothness of the surface and the back side of the tile.

Tile size
Trowel notch size
Thickness of
adhesive coat
Full surface contact
small, medium and large size
up to 50 x 50 cm
≥ 10.0
from 6.0
large size
from 50 x 50 cm
from 9.0


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• The tiles must not be soaked before fixing. When determining the adhesive thickness under the cladding, one should consider the geometric deviation of tiles shape, e.g. plane warpage.
• Open time – from the moment of application of the adhesive to the moment of placing the tiles upon it – is limited. In order to check if it is still possible to fix tiles, performing a test is recommended. It consists in pressing your fingers against the adhesive. If the adhesive remains on the fingers, you may fix the tiles. If the fingers are clean, the old layer of the adhesive has to be removed and a new one applied.
• The tools must be cleaned with clean water directly after use. Difficult to remove residues of the set adhesive can be removed with the ATLAS SZOP agent.
• Contains cement. May cause respiratory irritation. Causes skin irritation. Causes serious eye damage. May cause an allergic skin reaction. Keep out of reach of children. Avoid breathing dust. Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. If skin irritation or a rash occurs: Get medical advice/attention. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do – continue rinsing. Follow the instructions of the Safety Data Sheet.
• The adhesive must be transported and stored in tightly sealed bags, in dry conditions (most preferably on pallets). Protect against humidity. Shelf life in conditions as specified is 12 months from the production date shown on the packaging. Content of soluble chromium (VI) in ready-to-use mix - ≤ 0.0002%.


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Foil bags: 25 kg
Pallet: 1,050 kg in 25 kg bags
The above information constitutes basic guidelines for the application of the product and does not release the user from the obligation of carrying out works according to engineering principles and OHS regulations.
At the time of publication of this product data sheet all previous ones become void.
Date of update: 2016-03-31
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white, thick-coat deformable adhesive 4-20 mm (C2E S1 type)

Current documentation