ENHANCED MINERAL RENDER FOR MANUAL APPLICATION
OF RUSTIC TEXTURE
FOR INDOOR AND OUTDOOR USE
• reinforced with polymers
• durable and resistant to micro-cracking
• vapor permeable
• hydrophobic
AGGREGATE SIZES:
UP TO 2 mm - CERMIT DR 20
UP TO 3 mm - CERMIT DR 30
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| ATLAS CERMIT DR is thin-layer mineral render designed for manual preparation of internal and external plaster coatings. They can be used on all even and structurally sound mineral substrates such as concrete, traditional cement plasters, cement plasters, plasterboard panels and reinforced layers in the following composite wall thermal insulation systems: ATLAS, ATLAS STOPTER K-10, ATLAS STOPTER, ATLAS HOTER and ATLAS ROKER W-20. |
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| ATLAS CERMIT DR is based on white cement, lime, and quartz and marble aggregate of the following sizes: up to 2 mm - DR 20; up to 3 mm - DR 30. ATLAS CERMIT is efficient, convenient and easy to use. When dry, it forms a hydrophobic layer permeable for water vapour characterised by high resistance to weather, washing, etc. It is hard-wearing owing to the content of special micro-fibres additionally strengthening render structure. ATLAS CERMIT mineral renders are available in 41 colours shown in the NEW ATLAS COLOUR PALETTE. |
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| The substrate should be stable, even and structurally sound i.e. strong enough; it should be free from anything that may weaken adhesion, in particular dust, dirt, lime, oil, fat, wax, remains of emulsion and oil paint. Remove existing paint and render coats of insufficient adhesion. Afterwards, prime the substrate using ATLAS UNI-GRUNT. Fill in irregularities and defects using e.g. ATLAS LEVELLING MORTAR, ATLAS PLASTERING MIX or ATLAS REKORD finishing mortar. In each case, before application of ATLAS CERMIT, cover the substrate with ATLAS CERPLAST render primer. |
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| In order to prepare the render, pour the whole content of the bag into a container with measured amount of water ( 5.0÷6.0 l for 25 kg bag) and mix mechanically until homogenous. The mortar is ready to use after ca. 10 minutes and remixing; during this time, it is possible to adjust its consistency appropriately to application conditions. It maintains its properties for ca. 1.5 hours. Mix the mortar during work in order to maintain homogenous consistency. |
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| Apply ATLAS CERMIT DR over prepared substrate as a layer using a float made of stainless steel. Thickness of the layer should correspond with the aggregate grain size. Remove excess of material, place it in the bucket and mix. Form the texture of the surface using a float made of plastic with vertical, horizontal or circular moves depending on the expected line arrangement. Open time (between mass application and floating) depends on substrate absorptivity, ambient temperature and mortar consistency. Experimentally (for a given type of substrate and given weather) determine the maximum area that can be prepared in one technological cycle (application and floating). Apply the mix using the “wet on wet” method, preventing one batch from drying before application of another one. Otherwise the “seams” will be visible. Plan technological gaps in advance e.g. in corners or building angles, under rainwater pipes, etc. Protect the plastered surface during work and when it dries from direct sunlight, wind and precipitation. Drying time depends on the substrate, temperature and relative humidity of air and is from ca. 12 to 48 hours. Substrate and ambient temperature during work and when render dries should be from +5°C to +25°C. Paint the plastered surface using façade paints (e.g. ATLAS ARKOL S, ATLAS ARKOL N, ATLAS CERTON and ATLAS ARKOL E). Painting can commence 2÷6 weeks after plastering is completed (depending on paint type and colour). Only in case of ATLAS ARKOL S silicate paint, it can begin after the render dries, not earlier, however, than after 48 hours. Note: to avoid differences in colour shades in case of colour mineral renders, apply render of the same production date on the same surface. The information comprises basic instructions of product application and do not relieve users of responsibility for work in accordance with good construction practice and OHS regulations. |
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On average,
ca. 3 kg of ATLAS CERMIT DR 20 is sufficient for 1 m2
ca. 4 kg of ATLAS CERMIT DR 30 is sufficient for 1 m2
The exact amount of mix used can be determined in a test conducted on the plastered substrate. |
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| Drill with mixer or smooth floats: made of steel and plastic. Wash the tools with clean water directly after use. Clean the remainder of the set mortar that is difficult to remove with ATLAS SZOP. |
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Paper bags: 25 kg
Pallet: 1050 kg in 25 kg bags |
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| Store and transport in tightly closed original bags, in dry conditions (pallets are particularly recommended). Keep dry. Shelf life in conditions complying with the requirements is 12 months from the date on the packaging. |
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| Contains cement. Alkaline reaction with water – protect eyes and skin. In case of direct contact with eyes, seek medical attention. |
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Mix proportions of CERMIT DR:
5.00÷6.00 l of water for 25 kg of mortar
Pot life – 1.5 hours
Open time – min. 20 minutes
Mortar preparation temperature – from +5°C to +25°C
Substrate and ambient temperature – from +5°C to +25°C
Temperature resistance – from -20°C to +60°C
Content of soluble chromium (VI)
in ready-to-use mix - ≤0.0002%
PN-EN 998-2:2004
Factory-made, one-layer plastering mix (OC),
for indoor and outdoor use.
Reaction to fire - A2 s1 d0 class
Adhesion after required seasoning cycles ≥0.5 N/mm2 - FP:B
Compressive strength category CS II (from 1.5 do 5.0 N/mm2)
Water absorption - W1 category
Water permeability tested after required seasoning cycles ≤ 1ml/cm2 after 48 h
Water vapour permeability (m) 15/35
Thermal conductivity 0.93 W/mK (λ10, dry)
Gross dry mortar density ≤1800 kg/m3
Durability: adhesion after required seasoning cycles ≥0.5 N/mm2 - FP:B
Durability: water permeability after required seasoning cycles 1 ml/cm2 after 48 h |
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The product conforms with PN-EN 998-2:2004 and has been given Hygiene Certificate no. 463/B-272/93 by the National Institute of Hygiene.
ATLAS CERMIT DR render is a part of thermal insulation systems of external building walls:
- ATLAS ETA 06/0081, EC Certificate of Conformity 1488-CPD-0021
- ATLAS ROKER ETA 06/0173, EC Certificate of Conformity 1488-CPD-0036
- ATLAS STOPTER K-10 AT-15-4947/2004, Certificate of Conformity No. ITB-373/W
- ATLAS STOPTER AT-15-3662/2004, Certificate of Conformity No. ITB-374/W
- ATLAS HOTER AT-15-6502/2004, Certificate of Conformity No. ITB-0882/W. |
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