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VOLMA-NIVELIR EXPRESS

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Description VOLMA-NIVELIR EXPRESS

For VTR, VLG, CHLB factories -TU 5745-009-78667917-2008
For VSK factory -TU 5745-003-99145643-2012
VOLMA-NIVELIR EXPRESS is a dry mix based on complex binder, graded silica sand, and modifying additives that assure high mortar mobility and durability as well as optimal service life.

Specifications
  • Colour
    white
  • Recommended layer thickness
    5-100 mm
  • Material consumption for 10 mm thickness
    12.5 kg/m2
  • Water consumption per kg of dry mix
    0.29-0.34
  • Water consumption per 20 kg (1 bag) of dry mix
    5.8-6.8 l
  • Mortar pot life
    60 minutes
  • Application (air, working surface, material) temperature
    5-30ºС
  • Collapsing strength after 28 days
    ≥ 15 mPa, (М150)
  • Adhesion bond strength
    ≥ 1.0 mPa
  • Walking on the floor possible in
    4-6 hours
  • Floor can be loaded in
    72 hours
  • Apply the coating at a residual humidity of
    ≤ 1 %

The mix is intended for 5-100 mm thick high-quality levelling of concrete and cement sand floor bases for subsequent decorative covers as carpeting, floor-cloth, parquetry, ceramic tile, etc. Applicable in all residential units and public buildings. For internal works. Intended for manual and machined application.

The base shall be dry, durable, and have no dust, dirt, or greasy stains. The age of cement sand and concrete bases shall be at least 28 days and 3 months, respectively. Recommended work conditions: base dampness ≤ 6 %, base temperature ≥ 5°C, air temperature ≥ 5°C, relative air humidity ≤ 75 %.

. Remove from the carrying base all dust, dirt, bleach, oils, grease, wax, residual paint, etc.

Remove crumbly and loose parts from the base. Lay cushioning inserts in the floor junctions along the walls and columns (tape or thin strips of foam polystyrene). Patch cracks and large bruises with VOLMA-Nivelir Express tempered with a little water less than a day before you pour the floor. Protect against corrosion the steel parts in contact with the self-levelling mix mortar. In case of very damp, low-strength, and dirty bases covered with stains of asphalt mastic, engine oil, etc. we recommend you to lay the floor on a separating layer.

Mark the target layer thickness by installing level boards with the help of a levelling ruler and portable checkpoints. Mark the process sections for floor pouring. For sections of more than 50 m2 with a diagonal longer than 10 m make a deformation seam in the floor; however, always make it above the existing seams of the carrying base.

Pad the pre-treated base and parts of the walls, that will be contiguous with the poured-in-place floor, with VOLMA-Universal Pad the porous surface two or three times every four hours. Lay the poured-in-place floor only after the primer has completely dried out. We do not recommend you to apply other primers without preliminary advice of a specialist who represents the producer of VOLMA-Nivelir Express.

For manual application. Pour out the dry mix into pure water at 5-20°C at a rate of 0.29-0.34 l per kg and mix in five minutes using a special mixer or a drill with an attachment until homogeneous. Let the mortar settle for three minutes and mix once again. Avoid water overdosing!

For machined application. Pour out the dry mix in a machine (unit) tank and determine the required mix consistence by adjusting water consumption.

To check for consistence, pour 1.0 l of the mortar on a flat non-absorbing base (for example, glass, film, or foil). The stain shall be 50-55 cm in diameter.

1. Evenly pour the prepared mix until determined thickness without routine breaks.

2. Fill a marked process section in 40-60 minutes, In case of pouring the floor manually the process section area shall be 20-25 m2 or equal to the area of one premise.

3. Remove the levels right after you have grouted the base; remove all bubbles from the compound by progressively treating the grouted surface forwards and backwards with the help of a porcupine roller, a spreading knife, or a brush, starting from the sections adjacent to the walls and columns.

4. While the poured-in-place floor hardens in the first two days, prevent ins-and-outs and exposure to direct solar radiation as well as assure natural ventilation and aeration.

5. Dry-out time of the poured-in-place floor depends on the layer thickness and the temperature and humidity in the premise.

6. Lay the coating on the levelled floor no sooner than in 7 days after the pouring. When you lay the next coating, the residual dampness of the poured floor shall not exceed 1%.

VOLMA-Nivelir Express heat-insulated floor system is an ideal fit for use in the heat-insulated floor system.

The minimal layer for pouring the poured-in-place floor in the heat-insulated floor system shall be 40 mm. If this system is embedded in the mounting base, the pouring thickness shall be 5-100 mm. Start the under floor heating no sooner than in seven days after the floor has been poured, and set a temperature of 25-27°С for 2-4 days.

Store the bags with VOLMA-Nivelir Express on wooden pallets in dry premises. Pour out the mix from damaged bags to sound bags and use this mix first and foremost.
The guaranteed storage in sound manufacturer’s pack is 12 months.

Perform the works in conformity with construction requirements, standards, safety regulations, and occupational hygiene rules.

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