Floor levelling plaster LT 4000

Product description

The Fescon LT 4000 is a casein-free manually applied levelling compound with a special cement binder that is easy to level, and hardens and dries rapidly.


  • For layer thicknesses 3-30 mm
  • Manually levelled
  • For floors with underfloor heating
  • Dries through hydration
  • Correction of grading in floor
  • Pre-levelling of seams between hollow-core slabs before application of pump filler
  • Low dust


  • Concrete floor levelling indoors
  • Manual levelling, when the structure must be finished quickly
  • To correct errors in falls, and as a waterproofing substrate.
  • Graded casting using the pouring technique
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EAN code Product name Product number Package size
6416841202031 Floor levelling plaster LT 4000 20 KG 20203 20 kg


  • Clean, solid and dust-free
  • Sufficient strength, load-bearing capacity and immobility
  • Relative humidity < 95% RH
  • Temperature > + 10 °C
  • Loose layers, cement paste and other impurities must be mechanically removed
  • Carry out the priming in accordance with Fescon Adhesive Primer instructions, depending on the base
  • When beginning the levelling work, there must be no puddles of primer
Instructions for use
  • Mix a bag (20 kg) of the levelling compound in 3.6-4.0 litres of cold water
  • Mix the levelling compound into a consistent paste using a drill paddle
  • Apply the levelling compound with a steel trowel onto the levelled surface
  • Workable for about half an hour after adding water
  • Wash tools with water immediately after completing the work
  • Remove dried levelling compound mechanically
  • Can be covered using ceramic tiles, plastic or textile mats, vinyl tiles, wood parquet or cork.
  • we do not recommend leaving the floor levelling compound without coating
Waste handling

Storage and handling of waste. See the separate storage and disposal instructions https://www.fescon.fi/en/material-bank

Technical information

Material usage

1 mm layer approx. 1.5 kg/m²

Water requirement max. 3.6-4.0 l/20 kg
Binder special cement
Colour grey
Maximum grain size

0.6 mm

Package size 20 kg

storage time in a dry location approx. 12 months

Layer thickness

3 - 30 mm

Lowest usage temperature

+ 10°C

Workability time approx. 0.5 h
Drying time

approx. 1 day/10 mm (RH 50% + 20 °C)

Walkable approx. 3 h
Hardening time

approx. 1 day at + 20°C

Strength class C 20 (EN 13813)
Compressive strength

> 20 MPa (28 days, +20 °C, RH 50 %)

Adhesion strength

28 days > 1 MPa

Flexural bond strength F 5 (EN 13813)
Surface tensile strength > 1,0 MPa (28 days, +20 °C, RH 50 %)


The information is based on tests and practical experience. We cannot affect conditions at the work site so we cannot assume responsibility for the end result affected by local conditions.


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