mineral render requiring painting

N1 paca stalowa gładka N1 paca stalowa gładka
P1  na ściany P1 na ściany
P3  do wewnątrz P3 do wewnątrz
P4  na zewnątrz P4 na zewnątrz
W1  mrozoodporność W1 mrozoodporność
W2  wodoodporność W2 wodoodporność
r  faktura r faktura"baranek"

Product description

Economical version of CERMIT SN render – in order to obtain facade colour outside the range of the ATLAS coloured renders, the most economical solution is to apply CERMIT SN-MAL render and painting it with a façade paint.
Recommended for façades requiring high water vapour permeability – the porous structure of the set render ensures free flow of water vapour; it is an ideal finish for partitions like external single-layer walls of swimming pools, kitchens, drying rooms, laundries, cold stores, gymnastic halls, baths, old buildings, etc.

Main properties

  • requires painting
  • reinforced with polymers
  • durable and resistant to micro-cracking
  • vapour permeable
  • spotted texture, two thicknesses

Main parameters

  • consumption: from 2.5 kg/1 m²
  • compressive strength: 1.5 ÷ 5.0 N/mm²
  • high pH (~12)


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Requires painting – it is necessary to paint it with a façade paint.

Economical version of CERMIT SN render – in order to obtain facade colour outside the range of the ATLAS coloured renders, the most economical solution is to apply CERMIT SN-MAL render and painting it with a façade paint.

Decorative and protective finishing of façades and internal walls.

Light and durable render – it is an ideal finish for thermal insulation systems on all types of buildings.

Recommended for façades requiring high water vapour permeability – the porous structure of the set render ensures free flow of water vapour; it is an ideal finish for partitions like external single-layer walls of swimming pools, kitchens, drying rooms, laundries, cold stores, gymnastic halls, baths, old buildings, etc.

Recommended for buildings exposed to algae and fungi – situated close to clusters of greenery and water reservoirs; high pH (~12) hinders the development of biological corrosion appearing in the form of brownish-green deposit resulting in damage to the surface.

Types of rendered buildings – detached houses, apartment buildings and public access buildings.

Types of substrates – concrete, traditional plasters on walls of bricks, blocks, or ceramic, cellular concrete or silicate hollow bricks, plasterboards, thermal insulation systems with EPS, XPS and mineral wool.


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Resistant to micro-cracking – contains special fibres reinforcing its structure.

Durability parameters meliorate in use - thanks to the positive influence of natural carbonation process of mineral renders, which limits their absorbability, hardens structure and improves resistance to chemical aggression.

High durability and hardness – owing to the polymer - reinforced mix of binders – white, fine, high grade cement type and lime, and also due to the specially selected quartz aggregate.

Hydrophobic layer – the content of hydrophobic agents reduces the absorbability of the render and protects the partition against the effects of precipitation.

Protected with MYCO PROTECT system – based on biocides system guarantees long time effective protection against biological corrosion, i.e. development of fungi and algae on the surface of the render.

Does not attract dust, dirt and pollen from the environment.

Non-flammable – in combination with mineral wool it forms a non-flammable thermal insulation system on walls.

Suitable for machine application with a special plastering unit – the efficiency and the speed of application increase, especially on curved substrates and surfaces of irregular shapes. The machine method can be used for the application of CERMIT SN. Note: machine applied render forms a spotted structure different from that obtained with manual application.

1 texture: – spotted

2 thickness options: – 1.5 mm – CERMIT SN-MAL 15

                                     – 2.5 mm – CERMIT SN-MAL 25


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ATLAS CERMIT SN-MAL is manufactured in the form of dry mix of white cement, lime and quartz or dolomite aggregate.

Mixing proportions
(water/dry mix)
5.0 ÷ 6.25 l / 25 kg
for SN MAL 15
4.5 ÷ 5.5 l / 25 kg
for SN MAL 25

Mass preparation temperature, substrate

and ambient temperature during work
from +5°C to +25°C
Maturing time
ca. 10 minutes
Pot life
1.5 hour
Open time
ca. 20 minutes


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The renders conform to PN-EN 998-1 standard. EC Declaration of Performance No. 013-1/CPR.

CE 0767
PN-EN 998-1:2012
(EN 998-1:2010)
Factory made single-coat (OC)
rendering mortar

for outdoor use,

for masonry walls,

ceilings, posts and partition walls

Reaction to fire – class

A2 s1 d0

Adhesion after required freeze-thaw cycles

≥ 0.3 N/mm² - FP:B
Water absorption-category
Water permeability tested
after required freeze-thaw cycles
≤ 1ml/cm² after 48 h

Water vapour permeability coefficient μ

(EN 1745:2002, table A.12)
Thermal conductivity coefficient
(average tabular value P=50%)
0.83 W/mK (λ10dry)
(EN 1745:2002, table A.12)
Gross dry density
≤ 1800 kg/m³

Adhesion after required freeze-thaw cycles.

≥ 0.3 N/mm² - FP:B
Durability. Water permeability
after required freeze-thaw cycles
≤ 1 ml/cm² after 48 h

Release/content of hazardous substances

See: Safety Data Sheet


The renders have been given the Hygiene Certificate by the National Institute of Hygiene and the Radiation Hygiene Certificate. Additionally they are included in the following approvals of thermal insulation systems:

System name
Technical Approval No.
Certificate No.
ETA 06/0081
EC No. 1488-CPD-0021
ETA 07/0316
EC No. 1488-CPD-0075
ETA 06/0173
EC No. 1488-CPD-0036
FPC - ITB-0456/Z
FPC - ITB-0562/Z
FPC - ITB-0436/Z
FPC - ITB-0222/Z


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Substrate preparation
The substrate should be:
• stable – sufficiently rigid and sufficiently long stabilized. The assumed stabilizing time for substrates is, respectively:
− for new cement plasters from ready to use ATLAS plastering mortars, min. 1 week for each 1 cm of thickness,
−for concrete walls - at least 28 days,
• dry,
even – fill in larger irregularities and cavities with ATLAS LEVELLING MORTAR, ATLAS ZW 330 or ATLAS PLASTERING MIX, or adhesive mortars for the execution of the reinforced layer in thermal insulation systems. Before repair, prime the surface with ATLAS UNI-GRUNT emulsion,
• clean – free from layers that can deteriorate the adhesiveness of the render, especially dust, dirt, lime, oil, grease, wax, residues of oil and emulsion paints; a substrate covered with algae, fungi, etc. must be clean,
• primed - with ATLAS CERPLAST.
Rendering mass preparation
When preparing the mass for manual application, pour it from the bag into a container and mix dry – during transportation, aggregate segregation can occur. Next, pour the mix to a container with water (for proportions, see Technical Data section) and mix manually or mechanically until homogenous. Leave the mass to rest for 10 minutes and then remix. The ready to use mass must be used up within ca. 1.5 hour. Mix the mass from time to time while working in order to maintain homogenous consistency. While using a plastering unit, mixing has to be done according to the operation manual for the device. The level of added water has to be adjusted in such a way that the consistency of the applied render allows obtaining the appropriate texture of the one.
Render application
The mix can be applied manually or mechanically. Manual execution consists in the application of the render in a layer equal to the aggregate grain size, with a stainless steel float. Remove the excess of the material, place it in the bucket and remix. Machine application must be carried out with special plastering units.
Texture forming
The freshly applied coat requires texture forming with a float made of plastic. The spotted effect is obtained by floating the render with circular moves. The surface of the machine applied render is not shaped. It creates a spotted texture itself - different from the one in case of manual application.
Finishing works
The render can be painted with all façade paints (e.g. ATLAS ARKOL S, ATLAS ARKOL N, ATLAS FASTEL-NOVA and ATLAS ARKOL E). Painting works can start 2÷ 6 weeks after the render application (depending on the type and the colour of the paint). Only painting with ATLAS ARKOL S or ATLAS FASTEL NOVA paints can start directly after the render sets, not earlier, however, than after 48 hours (ARKOL S) or 5 days (FASTEL NOVA).


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−ca 2.5 kg of CERMIT SN-MAL 15 for 1 m²

−ca 3.5 – 4.0 kg of CERMIT SN-MAL 25 for 1 m²


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• The open time (between the application and the floating) depends on the absorbability of the substrate, the ambient temperature and the consistency of the render. The maximum surface possible for rendering in one technological cycle (application and floating) must be established experimentally (for the given type of substrate and weather conditions).

• Apply the render using the “wet on wet” method, preventing the floated layer from drying before applying the next layer. Otherwise, the seams will be visible. Technological breaks have to be planned in advance, e.g. in the corners and angles of the building, under rainwater pipes, or place of contact of two colours, etc.

• Protect the rendered surface both during work and while setting against direct sunlight, wind and precipitation.

• The setting time, depending on the substrate, temperature and relative air humidity, is from 12 to 48 hours. The substrate temperature during work and render setting must be between +5°C and +25°C.

• In order to avoid differences in colour shades while applying mineral render, cover one surface with the render of the same manufacturing date.

• Tools must be cleaned with clean water directly after use. Difficult to remove residues of the set render can be removed with the ATLAS SZOP agent.

• Irritant - contains cement. Irritating to respiratory system and skin. Risk of serious damage to eyes. May cause sensitisation by skin contact. Due to its form - powder, the product may cause mechanical irritation of eyes and respiratory system. Keep out of reach of children. Do not breathe dust. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Wear suitable protective clothing, gloves and eye/face protection. If swallowed, seek medical advice immediately and show the container or label. Follow the instructions in the Material Safety Data Sheet.

• Content of soluble chromium (VI) in ready-to-use mix - ≤ 0.0002%.


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The render 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.


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Paper bags: 25 kg
Pallet: 1050 kg in 25 kg bags


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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: 2014-05-15