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TM Rotavjämning K

TM Rotavjämning K is a is a self-drying, fibre-reinforced, cement-based levelling compound that is pumpable. The product is low-alkaline, which considerably reduces the risk of alkaline degradation of adhesives and other finishes.

Quick facts

  • Pumpable
  • Can be applied manually
  • Screeding, ramp construction
  • Can be walked on after approx. 1 hour
  • Flooring can be laid after 2-3 days
  • Fibre-reinforced
  • Light industrial floors
  • Compliant with AMA Hus
Application

TM Rotavjämning K is used to even out level differences or create a controlled slope for indoor flooring. When set, the levelling compound is designed to be coated with an appropriate surface layer in applications where the load level does not exceed lighter industrial loading.

PROPERTIES OF THE SET LEVELLING COMPOUND

Flexural strength EN 13813 

F7

Compressive strength  EN 13813 

C30

Surface tensile strength 

>1,5 MPa

Abrasion resistance, office castors  EN 13813

RWFC 450

Abrasion resistance, steel castors

RWA 100

Release of corrosive substances

CT

Fire class

A1

Free shrinkage

<0,04%

P-märkning

P1

Self-drying

Yes

Layer thickness

1-50 mm

Emissions TVOC 28 days µg/m2 x h

<10

Compliant with AMA Hus

Yes

pH

10,5

Contains casein

No

Contains slag

No

Waterborne underfloor heating

Yes, min. 10 mm

over pipes*

Elektrisk golvvärme

Yes, min. 5 mm

over coils*

Floating structures

Yes

Sloping installation

Yes

Stable against moisture damage

Yes

 

*Total layer thickness is dependent on relevant structure. A thicker levelling layer ensures better heat distribution. Always follow the supplier's instructions

Levelling with adhesion

TM Rotavjämning K can be used in both structures with adhesion to the surface and in floating structures where there is no adhesion to the underlying substrate.

SUBSTRATE

PUMP TRUCK

Concrete

10-60 mm**

Lightweight concrete

10-20 mm

Chipboard

10-50 mm*

Timber flooring

10-50 mm

Ceramic/natural stone

10-50 mm

 

 

SUBSTRATE

MOBILE PUMP

Concrete

10-50 mm

Lightweight concrete

10-20 mm

Chipboard

10-50 mm*

Timber flooring

10-50 mm

Ceramic/natural stone

10-50 mm

 

 

SUBSTRATE

MANUAL APPLICATION

Concrete

1-50 mm

Lightweight concrete

6-20 mm

Chipboard

1-50 mm*

Timber flooring

1-50 mm

Ceramic/natural stone

1-50 mm

 

* Take into account risk of sag. The product is intended for application to an inelastic substrate. The thickness of chipboard must be at least 22 mm. If the spacing of joists is greater than cc300, the levelling compound's height of pour must be at least 12 mm.

** See our substrate guide at www.tmprogress.se

 

SUBSTRATE WITH ADHESION

Make sure that the substrate is sufficiently dry and free of dust, cement, grease, paint or other contaminants which may prevent adhesion. Sand or mill off any sludge layer. Smooth and dense surfaces may need to be roughened to ensure adhesion.  The substrate's surface tensile strength should be at least 1.0 MPa for surfaces with normal load and at least 1.5 MPa for surfaces with industrial loads (see GBR's industry standard for testing).

Levelling without adhesion. Floating floors

The layer thickness must always be at least 30 mm and must always be reinforced. Larger surfaces should be divided into smaller areas. Surface layers should be applied within 3-7 days. If the surface layer is sensitive to moisture, the levelling layer must be covered or treated with diluted primer (1+5) after one two days while drying. Take the above into account when estimating drying times. Contact TM Progress for more information. The purpose of laying a floating structure is for it to be fixed to the substrate and be able to move freely laterally. To achieve this, the surface of the substrate must be smooth. The substrate may need to be sanded, levelled or made smooth in some other way under the floating structure. Floating floor structures are not suitable for heavy scattered or mobile loads

Appropriate surface layers

Use of the self-drying properties and hence the resulting short time before application of the surface layer requires the surface layer to be impervious to moisture and the underlying floor structure must be as dry as required for the surface layer before levelling takes place. See our surface layer guide at www.tmprogress.se

Delivery

TM Rotavjämning K is supplied in sacks with carry handles and in pump trucks, delivered via a hose.

SACK

 

Sack

20 kg

No. of sacks per pallet

48

No. of kg per pallet

960 kg

Mixed pallets

Yes

Min. delivery

20 kg

 

 

PUMP TRUCK

 

Delivery by pump truck

Yes

Min. delivery

500 kg

 

Preparations - temperature

The temperature is extremely important for successful results. 10 °C for the substrate, the material and the indoor temperature is the minimum level defined in AMA Hus 11. The temperature of the floor structure should be checked in plenty of time prior to priming. A higher temperature is very beneficial in terms of both quality and drying time.

Preparation - priming

Always prime the substrate with TM Primer 001 as instructed in the product's data sheet. The primer is applied 1-10 hours before levelling and must in any event be allowed to dry before levelling. However, the primer must not be left for more than 2 days as there is then a major risk of construction dust and other loose contaminants which may jeopardise adhesion settling on the surface of the primer. Note that thorough priming is particularly important for industrial flooring. Contact TM Progress for more information.

Temperature substrate

10-25 °C

Temperature storage

5-25 °C

 

Levelling

If the slope and curvature of the substrate deviates from the prescribed tolerance, the floor should be levelled using a spirit level or laser. Setting out height-adjusted level pins will allow you to ensure when laying the levelling compound that the layer thickness is sufficient to meet the tolerances

Mixing

Always use clean water and clean equipment. When mixing in a bucket, measure out the right amount of water into the container, add the dry mortar and mix using a drilling machine fitted with a whisk or a mixer for at least two minutes. Check that the levelling compound is homogeneous, free-flowing, contains no lumps, is well mixed and free from separation. When defining a slope, reduce the water volume to ensure an appropriate consistency.

 

Material required

1,65 kg powder/sq m/mm

Temperature, dry mortar

10-25 °C

Storage time, dry mortar

6 months

Water temperature

+5 - 20 °C

Water requirement

3,4-4 litres per sack 20 kg,

(17-20%)

Mixing time

2 minuter

Levelling  EN 12706

120-140 mm

Hose length, mobile pump

Min. 60 metres

 

Application

Pour or pump out the ready-mixed levelling compound in widths on the substrate. Lay each new width right next to an old width as soon as possible so that the compound flows together to form a flat, even coating. Make the widths no more than about 10 metres wide by using TM side form strips. Work the levelling compound using a notched trowel or spiked roller in order to achieve maximum smoothness..

Temperature, substrate

10-25 °C

Temperature, air

10-25 °C

Layer thickness

1-50 mm

Pot life

20 min

Wet time

15 min

Can be walked on after

1-3 hours

 

Finishing and cleaning up

The half-set levelling compound can easily be shaped or cut. Clean tool immediately with water. The set levelling compound can only be removed mechanically.

 
Drying and coatability

The drying time of the levelling compound is affected by the layer thickness, the temperature of the floor structure and air and the relative humidity on the premises. Good ventilation on the premises is a prerequisite for effective drying.

TM Rotavjämning K is self-drying, which means that the surface strength is quickly sufficient for coating and that the water in the levelling is bonded chemically during the setting process. The product can be coated within 1-3 days. However, surfaces designated for heavier loads require 5-10 days before laying the surface layer and starting to use the area. If the planned surface layer is unable to withstand moisture and it is necessary to wait for an appropriate RH, after 5-10 days the surface should be covered or treated with diluted primer (1+5) for the remainder of the drying time.

 

A levelling compound can never be drier than its substrate and cannot deal with surplus moisture from it. The product can be laid on concrete with up to 95 % RH, but the self-drying function requires that the relative moisture content of the underlying structure does not exceed the moisture content required for the planned surface layer. Note that the levelling compound is unable to withstand shrinkage movements or settling from the drying of the substrate.    

 

Drying on one side due for example to a floating structure prolongs the drying time.

 

To prevent excessively fast drying and a risk of cracking, the levelling compound applied/laid must not be exposed to draughts, high temperature or direct sunlight.

 

MODERATE LOAD

Processing time

15 min

Can be walked on after

1-3 hours

Time before forced drying

3 days

Coatable

1-3 days

Capable of withstanding full load

1 day per mm of layer thickness

Time before underfloor heating

1 day per mm of layer thickness (max. 50 mm)

 

 

 

INDUSTRIAL LOAD

Processing time

15 min

Can be walked on after

1-3 hours

Time before forced drying

3 days

Coatable

5-10 days

Capable of withstanding full load

1 day per mm of layer thickness

Time before underfloor heating

1 day per mm of layer thickness (max. 50 mm)

 

Purchase & delivery
Usage calculation
Documents

Delivery

Contact Johan Engwall phone +46 70 345 53 45

 

Sack 20 kg/sack. 48 sacks/pallet. 960 kg/pallet. Fast delivery and mixed pallets at no extra charge.

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