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ATLAS SMS 15 Rapid-Set Self Levelling Compound 25Kg – Pallet Deals and Bulk Buy

ATLAS

ATLAS SMS 15 (1-15mm)

Rapid-Set Self Levelling Compound

  • perfect spreading
  • perfectly smooth
  • foot traffic just after 4 hours
  • ceramic and stone cladding just after 8 hours
  • PVC flooring just after 12 hours
  • high compressive and flexural strength, low linear contraction
  • unit size: 25Kg

Spotted a pallet deal cheaper than ours? We can usually beat it! 0333 344 2655 or info@buythepallet.co.uk

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£766.00 +VAT

£766.00 +VAT
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ATLAS SMS 15 (1-15mm) Rapid-Set Self Levelling Compound extended information

Consumption: Average consumption is 16,6 kg of mortar for 1 m2 and 10 mm coat thickness.

ATLAS SMS 15 Use

Perfectly smooth – especially recommended beneath thin-coat flooring and PVC panels.
Levels surfaces within 1 – 15 mm thickness range – levels local irregularities and slightly sloped floors.
Elevates floor level throughout the room – allows to equalize the level of two adjacent rooms.
For application in living room, corridor, hall, office, waiting room or kitchen – in residential housing, public facilities, educational and healthcare buildings.
For levelling of existing floor heating – while screed is uneven and requires additional thin layer of compound before application of final coat.
Type of finishing coat – tiles, PVC flooring, carpet, panel flooring, parquet.

Possible arrangements:

  • bonded – thickness1-15mm–high quality concrete,cemen tscreed (with or without floor heating), terrazzo.

ATLAS SMS 15 properties

Perfect spreading – ensures perfectly smooth and levelled surfaces even in large rooms, no battens nor screeding level needed.
Rapid-set – rapid strength build-up enables foot traffic just after 4 hours after application.

Compressive strength: ≥ 25 N/mm2.
Flexural strength: ≥ 7 N/mm2.
Suitable for manual and mechanical application – easy and quick application manually and mechanically. High application efficiency is reached with helical pump units.
Very low linear contraction – minimum change in linear dimensions during screed drying (≤ 0.6 mm/rm) limits the risk of cracking and loosening of weak- ened substrates.

ATLAS SMS 15 technical data

Bulk density (of dry mix)approx. 1,2 kg/dm3
Mixing ratio (water/dry mix)0,2-0,21 l / 1 kg
5,0-5,25 l / 25 kg
Min./max. screed thickness1 mm / 15 mm
Minimum screed thickness beneath parquet3 mm
Maximum aggregate size0,5 mm
Linear changes≤ 0,06 %
Shear strength (after 28 days)≥ 1,0 MPa
Mortar preparation temperature, substrate and ambient temperature during workfrom +5 °C up to +25 °C
Pot life (between mass mixing until work end)approx. 40 minutes*
Foot trafficafter 4 hours*
Installation of ceramic and stone tilesafter 8 hours*
Installation of carpet, PVC, linoleum flooring- thickness up to 5 mm: after 12 hours*
- thickness above 5 mm: after 24 hours*
Installation of parquetafter 24 hours**

*The time shown in the table is recommended for the application in the temperature 20°C and humidity 55-60% (approx.).

** for SMS 15 thickness minimum 3 mm and application in approx. 20 °C i 55-60% humidity.

Screed installation

Substrate preparation

The substrate should be stable, sound and air dry, due to the risk of mass outflow, should keep bath-like shape. General requirements for substrates:

  • cement screeds – min. 28 days old,
  • concrete – min. 3 months old.

Substrate irregularities (cracks and gaps) should be primed with ATLAS UNIGRUNT emulsion or ATLAS GRUNTO-PLAST mass and levelled with ATLAS ZW 330 or ATLAS TEN-10 mortars. Dry, repaired substrate should be dedusted and thoroughly primed with ATLAS UNI-GRUNT or ATLAS UNI-GRUNT ULTRA emulsion and left to dry.

Terrazzo or similar substrates should be degreased and all coats of paste or impregnating sealers should be removed. Terrazzo should be primed with ATLAS ULTRAGRUNT 4 hours before application of SMS 30..
Expansion joints

Separate screed and walls with ATLAS EXPANSION JOINT PROFILES. Expansion joints should also be applied at room thresholds and around load-bearing posts. The existing structural expansion joints should be transferred onto the screed layer.

Mass preparation

Machine application – use mixing-and-pumping units with continuous flow of water. It is advisable to use pumps of efficiency 60 l/min. Pour the dry mix to the basket and set water level providing appropriate mass consistency. Proper consistency can be verified with 0.5 l or 1 l container. The prepared mix, poured from a 0.5 l container onto even, non-absorptive substrate (e.g. foil) should form approx. 35 ÷ 40 cm diameter patch (for 10 l container – 50 ÷ 55 cm).

Manual application – pour the mortar into a container with water (see Techni- cal Data for ratio) and mix with low-speed mixer with a drill for mortars, until homogenous. Remix after 5 minutes. The mass retains its properties for about 40 minutes. Proper consistency should be verified by pouring the mass from 1 l container onto an even, non-absorptive substrate (e.g. foil). It should form a “patch” of approx. 50 ÷ 55 cm diameter.

Screed application

Before application, the intended screed thickness should be marked (on walls and in the application area), which can be done with a spirit level and portable height benchmarks. Pour the prepared mass evenly and continuously up to the desired height, avoid gaps. The application area should be arranged in the way allowing for mass application and de-aeration within approx. 40 minutes. In case of manual application the excessive mass should be raked up towards oneself with a long metal float. Directly after each application area filling, the mass must be de-aerated with a spike roller. It is recommended to perform de-aeration in two perpendicular directions just after the mass application.

Maintenance

Fresh screed should be protected against excessive drying, direct sunlight, low air humidity or draughts. In order to ensure favourable conditions for screed setting sprinkle surface with water or cover it with foil. Proper maintenance leads to increase of strength of product but also extends the time of drying. Time of drying depends on layer thickness and ambient thermal and humidity conditions. Foot traffic is possible after approx. 4 hours and full load after approx. 7 days.

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