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TM Express K

TM Express 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
  • Levelling, slope building
  • Heated floors
  • Can be walked on after 1-3 hours
  • Fibre-reinforced
  • 20 kg sacks with carry handles
Application

TM Express 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 with moderate load levels, without industrial load.

Properties of the set levelling compound

Flexural strength    EN 13813 

F5

Compressive strength    EN 13813 

C20

Surface tensile strength

>1,5 MPa

Abrasion resistance EN 13813 

RWFC 350

Release of corrosive substances

CT

Fire class

A1

Free shrinkage

<0,03 %

P labelling

P2

Normal-drying

Yes

Skikttjocklek

10-40 mm

Emissioner  TVOC 28 dygn µg/m2 x h

<60

Compliant with AMA Hus

Yes

pH

10,5

Contains casein

No

Contains slag

No

Waterborne underfloor heating

Yes, min 10 mm over pipes*

Electric underfloor heating

Yes, min 5 mm over coils*

Floating structures

Yes

Slope building

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 Express K kan användas i såväl konstruktioner med vidhäftning till underlaget som flytande konstruktioner där avjämningen saknar vidhäftning till underliggande material. Produkten ska alltid förses med ytskikt.

SUBSTRATE

PUMP TRUCK

Concrete

10-40 mm

Lightweight concrete

10-20 mm

Ceramic/natural ston

10-40 mm

 

 

SUBSTRATE

MOBILE PUMP

Concrete

10-40 mm

Lightweight concrete

10-20 mm

Concrete/natural stone

10-40 mm

 

 

SUBSTRATE

MANUAL APPLICATION

Concrete

1-40 mm

Lightweight concrete

6-20 mm

Ceramic/natural stone

1-40 mm

LEVELLING WITH ASHESION

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 strength must be at least 1.0 MPa.

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.

 

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. Contact TM Progress for more information.

Appropriate surface layers

TM Express K is intended to be given a surface coating. See our surface layer guide

Delivery

TM Express is supplied in tightly sealed sacks with carry handles and can also be delivered by pump truck via a hose.

SACK

 

Sack

20 kg

No. of sacks per pallet

48

No. of kg per pallet

960 kg

Min. delivery

20 kg

Mixed pallets

Yes

 

 

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 good time before 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 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 primer.

Temperature substrate

10-25 °C

Temperature storage

5-25 °C

 

Preparation - 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 allows 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 20 kg sack (17-20%)

Mixing time

2 minutes

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

1-40 mm

Levelling EN 12706

135-145 mm

Pot life

20 min

Wet time

15 min

Walkable after

1-3 hours

 

Supplementary work and cleaning

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 Express K is normal-drying and the guideline value for drying time is 24 hours/mm at 20°C, 50% RF and with good air circulation. Levelling layers thicker than 40 mm, drying on one side, lower temperature or higher humidity will prolong the drying time. The product can be laid on concrete with up to 95% RF but note that the levelling compound can never be drier than the substrate. 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.

Processing time

15 min

Can be walked on after

1-3 timmar

Time before forced drying

3 dagar

 

Coatable:

0-30 mm

30-60mm

 

1 day per mm of layer thickness

2-3 days per mm of layer thickness

 

Capable of withstanding full load:

0-30 mm

30-60mm

 

 

1 day per mm of layer thickness

2-3 days per mm of layer thickness

Time before underfloor heating:

0-30 mm

30-60mm

 

1 day per mm of layer thickness

2-3 days per mm of layer thickness

 

Note

This product sheet aims to provide technical information on the product which we supply and to provide advice, guidelines and recommendations on its use where possible. We are responsible for the technical properties of the product as specified in the table above, but we cannot accept responsibility for local conditions and any consequences these may have for the end results. However, in our contracts we assure the quality of these factors as well. That said, we are unable to guarantee the quality of other products that may be used in the same structure. Always follow the relevant supplier's instructions for each material. 

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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