Floor concrete LB 7

Product description

Fescon LB 7 is a chemically drying floor concrete with a special cement binder for dry, humid and wet areas.


  • Pumpable
  • Rapid strength gaining
  • For layer thicknesses 10-150 mm
  • Good workability characteristics
  • Rapid drying
  • A surface that can be waterproofed in one work stage
  • Fibre-reinforced


  • Concrete floor casting
  • Repair of indoor concrete structures
  • Casting of structures that must be taken into use rapidly
  • Casting of surface flooring, floors with underfloor heating
  • Wet areas, underneath the waterproofing
The product is suitable for use on sites with a Nordic Swan Ecolabel.

Vinkki! Vieritä taulukkoa sivuttain
EAN code Product name Product number Package size
6416841202154 FLOOR CONCRETE LB 7 20215 20 kg
6416841333407 FLOOR CONCRETE LB 7 33340 1000 kg


  • Clean, solid and dust-free
  • Sufficient strength, load-bearing capacity and immobility
  • Relative humidity < 95 % RH
  • Temperature > +10 oC
  • Loose layers, cement paste and other impurities must be mechanically removed
  • For thin layers, we recommend brushing the product on the base for surface casting
  • In floor surface casting, carry out the priming in accordance with Fescon Adhesive Primer instructions, depending on the base
  • When beginning casting work, there must be no puddles of primer
Instructions for use
  • Mix a bag (20 kg) of the levelling compound in around 3.0 litres of cold water
  • Mix the levelling compound into a consistent paste using a drill paddle or a concrete mixer
  • Apply the levelling compound with a steel trowel onto the levelled surface
  • Workable for over one 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
  • Can also be painted or epoxy coated. However, you must ensure that the technical specifications of the compound meet the flooring manufacturer’s requirements for the base.
  • In wet areas, use the products of the certified Fescon waterproofing system for tiling work. Can be waterproofed after around 3-7 days (+20 °C RH 50%). The moisture content of the entire structure affects the drying time
  • The need for aftercare is considered on a case-by-case basis according to the purpose of use and drying
  • Aftercare either by covering with a plastic film or using the Fescon curing compound; do not spray with water
Other considerations
  • surface area cast in one go is <15 m2. We do not recommend leaving the casting surface 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

approx 1.8 kg/m2/mm

Water requirement 2,5 - 3.0 l/20 kg
Type powder
Colour grey
Maximum grain size

3 mm

Package size 20 kg

storage time in a dry location approx. 1 year

Layer thickness

10-150 mm

Fibre Plastic fibre
Lowest usage temperature

+ 10°C

Workability time > 1 h
Coatable 7 days (temperature +20 °C and humidity 50% RH)
Walkable approx. 1 day
Compressive strength

28 days approx. 40 MPa

Adhesion strength

28 days > 1.0 MPa

Flexural bond strength 28 days approx. 4,0 MPa


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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