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SELF-LEVELLING CEMENT MORTAR (from 10 mm to 50 mm) FOR SUBFLOORS AND ROUGH FLOORS
FOR INTERNAL AND EXTERNAL USE
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ATLAS POSTAR 100 is a cement-based compound designed for mechanical and manual subfloor and rough floor making. It is suitable for all kinds of residential buildings, public and industrial buildings provided that their parameters comply with the properties included in the technical sheet. ATLAS POSTAR 100 mortar is suitable for outdoor use e.g. on driveways, terraces and balconies. In case of indoor use, it can be applied in dry or wet rooms as subfloor or rough floor under terracotta and various floor coverings, wood flooring, panels, stone tiles. It can be used for repair and modernisation work as well as for new projects. It is applied for subfloor or rough floor making in the following arrangements: connected with existing substrate (minimum rough floor thickness - 10 mm, min subfloor thickness
- 20 mm), on the separating layer (minimum bed thickness
- 35 mm), floating (minimum bed thickness - 40 mm) or in floor heating systems (minimum bed thickness over heating elements - 25 mm). |
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| ATLAS POSTAR 100 is a ready-to-use dry mix of high-grade cements, quartz fillers, plasticisers and polymers of the latest generation. High plasticity, good adhesion to mineral substrates and increased compressive and flexural strength combined with a wide range of bed thickness and the self-levelling ability make the mortar convenient to use for contractors and practical for users. ATLAS POSTAR 100 is frost- and water-resistant. |
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| The method of preparation depends on the construction arrangement in which ATLAS POSTAR 100 is to be used. Detailed instructions below, separately for each jointless floor (connected, on the separation layer, floating, in the floor heating system). In any case, the substrate should be stable and structurally sound and, due to the risk of underlayment outflow, should have a tank-like appearance. Walls and other elements within the range of conducted work e.g. pillars should be separated (using expansion joints) from the subfloor to be made e.g. using ATLAS EXPANSION TAPES or thin foamed polystyrene boards. |
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In case of mechanical pouring, appropriately set the fixed level of dosed water that ensures correct consistency of the mix flowing out from a hose. To check consistency, pour out the mass from a 1 l container onto even non-absorptive substrate (for example - foil). The mortar should then form a "patch" of ca. 40 cm in diameter.. In case of manual method, prepare the mix by pouring dry mass into a container with suitable amount of water (in the ratio of 3.25÷3.75 l of water for 25 kg of container) and mix until homogenous. It is best to mix it mechanically, using a drill with a mixer, flow mixer or in a concrete mixer. The mass is ready to use immediately after mixing. It maintains its properties for 1 hour. Adjust the ratio of added water experimentally, following the desired consistency of the mortar, type of substrate and weather. Inappropriate amount of water for mass preparation results in deterioration of strength parameters of the rough floor or subfloor.
Bonded floor
It is characterised by direct and whole-surface connection with the substrate. ATLAS POSTAR 100 can be applied on any mature mineral substrate. The substrate should be dry and free from anything that may impede adhesion, in particular dust, dirt, lime, oil, fat, wax, bitumen, paint, etc. Mechanically remove loose elements and parts of substrate of poor strength. If necessary, the use of ATLAS UNI-GRUNT PLUS PRIMING EMULSION is recommended to reduce the substrates absorption. The emulsion, among others, prevents air bubble formation on the surface of rough floor and improves mixture self-levelling ability. The minimum bed thickness in this case is 10 mm. If ATLAS POSTAR 100 is used as subfloor, its minimum layer thickness should be 20 mm.
Unbonded floor on the separation layer
It is prepared on very weak, absorptive or oiled substrates or on other substrates that do not provide appropriate rough floor adhesion. The separation layer can be made of 0.2 mm thick polyethylene foil or another material of similar properties, allowed for use in construction industry. In case of substrates which are exposed to moisture, a vapour-resistant or anti-moisture insulation placed on the substrate may serve as the separation layer. The insulation should be placed tightly without creases and folded onto the walls (onto the expansion joint strips), at least up to the rough floor height. The minimum bed thickness is 35 mm.
Unbonded floor
ATLAS POSTAR 100 can be applied on thermal or acoustic insulation layer, made of: foamed polystyrene boards of min. FS-20 grade, hardened floor panels made of mineral wool or other materials fit for this purpose. Pay special attention to accurate and even distribution of all the substance applied on the surface. The insulation should be placed tightly and horizontally on the substrate and the boards should be laid with offset edges. In order to level the substrate, use ATLAS LEVELLING MORTAR or ATLAS TEN-10 mortar under the hard boards in accordance with their method of application. Dry sand can also be used for this purpose. The insulation must be always protected against contact with the rough floor being made, with the help of tight separation layer folded onto the walls (for example PE foil of min. 0.1 mm in thickness (min. 0.2 mm if floor heating is used) or another material of similar properties, allowed for use in construction industry. The jointless floor can in no place have contact with the rough floor, walls or installations. If the compressibility of the insulation exceeds 5 mm or greater loads are anticipated, the thickness of the jointless floor should be increased correspondingly, or the jointless floor should be made as reinforced floor. The minimum bed thickness is 40 mm.
Unbonded floor in floor heating system
The installation should be checked and fastened properly. In the case of water heating, the heating pipes should be filled with water before pouring ATLAS POSTAR 100. The jointless floor should be made as two layers (in order to prevent floating of pipes); the first layer should be poured up to the upper edge of the heating elements, and the height of the second layer should be at least 25 mm above the pipes. The second layer of the underlayment can be made after initial setting of the first layer when it can be used (after min. 24 hours). If the installation has been prepared and mounted properly, it is allowed to make the jointless floor as a single layer. In order to vent the underlayment, it is recommended to use a brush with long hard horsehair. In addition, respect the specifications of the technical project as well as recommendations provided by the heating system manufacturer. Progressive heating of the jointless floor (temperature increase by max. 3°C in 24 hours) can begin not earlier than 7 days after pouring the underlayment, and full heating is allowed after 28 days. |
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| The mix is poured out mechanically using a mixing-pumping unit with continuous flow water dosage, equipped with a worm pump. ATLAS POSTAR 100 can also be poured manually. The size of poured field should be adapted to the abilities of the team that carries out work, in particular in case of manual pouring. Before commencement of work, determine future bed thickness in the pouring field. The thickness should comply with requirements of construction craft and knowledge, and should be adjusted to load of rough floor and layer arrangement in which it is used. This can be done using for example a level and portable height bench-marks. Pour the prepared mortar evenly and continuously up to the desired height, avoiding gaps. Right after pouring in each field, de-aerate the mix using, for example, a de-aerating roller or a brush with long hard horsehair, moving the brush in shaking manner along and across the poured surface. Constantly check the mixing degree and consistency. Prepare expansion joints in line with technology of cement rough floor and subfloor preparation. Protect the poured mix from drying too quickly, direct sunlight, low air humidity and draughts. To ensure convenient setting conditions, as needed, sprinkle the fresh surface with water or cover it with foil. The surface maintained in such a way is very hard and is characterised by low absorptivity. The drying time of the underlayment depends on the layer thickness and also ambient thermal conditions and humidity. It is possible to begin underlayment use after about 24 hours, whereas any load can be placed on it after ca. 14 days. Expansion joints existing in the substrate should be copied on set layer in the form of cuts. The moment of work commencement depends on the type of anticipated tiles and work should start when rough floor parameters stabilise (after 3÷4 weeks), and in case of PVC or wood flooring – after complete drying. 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. 20 kg of the mortar is used for 1 m2 for each 1 cm of the layer. |
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| Mixing-pumping unit with worm pump (mechanical pouring), mixer, flow mixer or concrete mixer (manual pouring), brush with long hard horsehair or de-aerating roller. 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 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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| Irritant. Contains cement. Alkaline reaction with water. Protect skin, eyes and respiratory system. Keep out of the reach of children. Do not inhale dust. In case of contact with eyes, immediately rinse them with plenty of water and seek medical attention. In case of ingestion, immediately seek medical attention and show the packaging or label. |
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Mixing proportions:
ca. 0.13÷0.15 l of water for 1 kg of mortar
ca. 3.25÷3.75 l of water for 25 kg of mortar
Pot life – ca. 1 hour
Temperature:
mortar preparation temperature – from +5°C to +25°C
Substrate and ambient temperature during work – from +5°C to +25°C
Temperature resistance – from -20°C to +60°C
Subfloor use – after ca. 24 hours.
Max. aggregate diameter – 3.0 mm
Min. layer thickness - 10 mm
Max. layer thickness - 50 mm
Content of soluble chromium (VI)
in ready-to-use mix - ≤0.0002%
PN-EN 13813:2003 CT-C50-F7-AR0.5
Reaction to fire - A1fl class
Corrosive substance release - CT
Water permeability – NPD
Water vapour permeability – NPD
Compressive strength C50 (≥ 50 N/mm2)
Flexural strength ≥ F7 (≥ 7 N/mm2)
Abrasion resistance AR 0.5
Acoustic insulation - NPD
Sound absorbance NPD
Thermal resistance - NPD
Chemical resistance - NPD |
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| The product conforms with PN-EN-13813:2003 CT-C50-F7-AR0.5 and has been given Technical Approval AT-15-6971/2006 by the Building Research Institute and Hygiene Certificate no. HK/B/0971/01/2004 by the National Institute of Hygiene. |
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