Technical Data Sheet (TDS)

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NM 110

High-performance levelling and smoothing screed (1 to 10-15 mm)

Uses

BOSTIK NM 110 self-levelling compound is suitable for smoothing and levelling of screeds, concrete floors and other hard, rigid bases (ceramic tiling and special plasterboards). BOSTIK NM 110 is suitable for commercial premises with high traffic.

It can be applied in layers between 1-10 mm thickness in one work step (up to 15 mm when used with sand).

Can be used on traces of hard, sound and water-tight adhesives (existing acrylic, neoprene and bituminous film).
Suitable under parquet/wood floors, plastic and textile coverings, linoleum and tiling.

Not to be used as a wearing surface.

Benefits

  • Easy to prepare and ready-to-mix
  • Self-levelling properties
  • Reduced sanding
  • High resistance to identation
  • Pumpable
  • Thickness of application: 1 to 10 mm (class P3 - 3 to 10 mm); 3 to 15 mm when used with sand
  • Suitable for underfloor heating
  • Packaging available in 6 languages: English, Bulgarian, Romanian, Russian, Ukranian and Kazakh.
 

Properties

Physical:

  • Composition: Synthetic resin modified cement powder, low in chromate
  • Colour: grey
  • Working temperature : Preferably between +8°C and +25°C. Not below +5°C or above +30°C
  • Mixing ratio: 6 litres of water per 25 kg bag
  • Working time/Flow life: 20 minutes at +20°C
  • Set for walking: after 4-6 hours
  • Dry for floor covering: after approx. 24- 72 hours 
  • Resistant to castor wheels at  3 mm or above
  • Compressive strength after 28 days = 27 MPa
 

Consumption:

1.5 kg/m² per 1 mm thickness

Safety:

IMPORTANT: before embarking on any work involving BOSTIK NM 110 the separate Product Safety Data Sheet must be studied carefully by those carrying out the work.
Do not breath dust, PREVENT skin and eye contact with powder and particularly the wet material when mixed. Strong alkali when wet – can cause serious eye damage and may cause an allergic reaction resulting in skin disorders.

Shelf life:

Up to 9 months in the original unopened bag in dry conditions.

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Application


PREPARATION
Subfloors must be sound, of adequate tensile and compressive strength; free from laitance, cracks and structural defects; clean and free from dust, grease, curing compounds, sealers or any other contaminants that would inhibit proper bond.
Substrate residual moisture content must be less than 3%.
For anhydrite slabs, moisture content should be less than 1% for laying textile coverings and ceramic tiles, 0.5% for laying plastic coverings and parquet floors.
All major holes must be filled with ROXOL RENO QUICK.
New asphalt screeds should be shot-blasted first.
Adhesive residues that are hard, sound and water-tight should be mechanically cut-back to a minimum. Soft and weak adhesive residues and smoothing underlayments should be completely removed.
See primer chart for selecting suitable primer.

Underfloor heating
Underfloor heating systems must comply with current building regulations. In all cases drying time must be respected. Turn off the heating 48 hours before starting the work. The heating should be turned up to its operating temperatures gradually, in stages at least 48 hours after laying the floor covering. Do not apply when underfloor heating is in operation.
 
 
 
 
The following substrates must be pre-treated with suitable Bostik primers and bonding agents:

Substrate
Unidur 10
Unidur N
Prima
Impreglue
Primepox
Primabois
Eponal 376
Porous surfaces
(concrete slab, cement screed...)
R(1)
R(2)
R(2)
R
P
 
R(3)
Normally absorbent substrates
(concrete slab, cement screed…)
 
P
R
 
P
 
R(3)
Non porous substrates
(concrete slab, cement screed…)
 
R
R
 
R
 
R(3)
Anhydrite screed
 
R(6)
R(6)
R
 
 
 
Asphalte screed
 
 
 
R
R
 
R(3)
Old self-levelling compound
 
R
R
R
P
 
 
Old ceramic tiles
 
R(4)
R
 
R
 
R(3)
Old parquet
 
R
R
P
R
R
 
Chipboard, wooden board, OSB
 
R(5)
R
P
R
R
 
Old adhesive
 
R
R
R
R
 
 
Old industrial flooring or paint
 
 
 
 
R
 
R(3)
R - recommended                             P - possible application
(1) - 1:3 to 1:5 water-diluted depending on porosity and number of layers
(2) - 1:1 water-diluted
(3) - wet substrate
(4) - sandstone & ceramic tiles only
(5) - not suitable for waterproof boards
(6) - allow to dry for 24 hours

PRECAUTION: Before using primer read the primer data sheet carefully and respect our recommendations for ground preparation.
Before proceeding with the subsequent application of the compound, always allow primers to dry in accordance with the technical information.
 

APPLICATION
Pour approx. 6 litres clean water (water temperature + 8° to + 20°C) into a clean mixing bucket. Stir the compound powder into water with an electric drill and mixing paddle (maximum 500 rpm) to obtain a lump-free mixture.
After mixing, a maturing time of at least 1 minute is recommended to optimise flow. Remix for 30 seconds. 
The smoothing and levelling compound must be applied to the substrate within the specified working time and smoothed with a stainless steel float. Spread the compound to zero in order to fill the pores, then smooth and spread in a regular manner to the desired thickness.
The thickness of application can be increased up to 15 mm by adding sharp sand S409 (particle size from 0.4 to 0.9 mm, sand should be washed and dried). The sand is added as the last component into the mixture at a rate of 8 kg per 25 kg bag of Bostik NM 110.
In hot weather add 1 kg of ADJUVANT FORCE 3 per 25 kg bag of BOSTIK NM 110. The water dosage should be reduced by half a litre.
Any subsequent application of BOSTIK NM 110 is best performed as soon as the first layer is set for walking but still damp. If it is dry, an intermediate primer coat of water-based primer UNIDUR N (diluted) or UNIDUR 10 is required.
In case of several layers of self-levelling the upper layer must not exceed the thickness of the bottom layer, total thickness remaining 10 mm (or 15 mm with sand). 
 
MECHANICAL PREPARATION (PUMPABLE)
BOSTIK NM 110 can be mixed using a continuous "mixing-pump". In this case the optimum water content is regulated on the basis of product viscosity. This one must be equal to the viscosity obtained by standard mixing of 1 bag in 6 litres of water.
Once mixed, BOSTIK NM 110 is pumped and applied to the desired thickness (10 mm maximum in one single continuous coat).
Hint: For thicker layers, using a spiked roller will help air evacuation and improve surface finish.
For all additional information, please contact our technical department.
Protect from excessively rapid drying, e.g. due to direct sunlight, draught or high room temperature. Conversely,  poor airflow and low temperatures will significantly increase drying times. Do not lay floor coverings before the compound is completely dry.
 
REMARKS
Do not use BOSTIK NM 110:
-  on brittle, soft or permanently humid substrates.
-  on old floor coverings (special cases: consult us).
-  do not add water to the compound after it has started to set.
-  do not use on substrates subject to rising damp.
-  do not apply directly on metal substrates
 
CLEANING
Tools may be cleaned with water whilst the mix is still wet.

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Packaging

Presentation Bar code Bostik code
bag - 25 kg 3549210026129 127491

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