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Kerakoll Levelflex Fibre – Pallet Deals & Bulk Buy – Fast setting fibre reinforced self levelling compound


Kerakoll Levelflex Fibre

Fast setting fibre reinforced self levelling compound. Ideal for new build or renovation works.

The formulation of Kerakoll Levelflex Fibre ensures optimal compatibility and adherence with all types of ceramic, porcelain, natural stone, and mosaic tiles.

  • Up to 50 mm in a single application
  • Suitable for pump application
  • Fibre reinforced for renovation works
  • Formulated with high‑performance raw materials with low environmental impact
  • Suitable for laying ceramic, porcelain, natural stone tiles and mosaic tiles
  • Unit size: 20kg bags
  • Coverage: 1.67 kg/m2 per mm of thickness
  • Greenbuilding rating: 4
    • Regional Mineral ≥ 60%
    • Recycled Regional Mineral ≥ 30%
    • CO2 Emission ≤ 250 g/kg VOC Low Emission Recyclable

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£337.00£574.00 +VAT

£337.00 +VAT
£480.50 +VAT
£574.00 +VAT

Kerakoll Levelflex Fibre extended information

Coverage: 1.67 kg/m2 per mm of thickness


Preparation of substrates

The substrate must comply with current British standards and industry regulations. In general, substrates must be free of dust, oil and grease, free from any moisture rising, with no loose, flaky or imperfectly anchored parts such as residues of cement, lime, paint coatings and adhesives, which must be completely removed. The substrate must be stable, non-deformable, without cracks and have already completed the curing period of hygrometric shrinkage.

In particular, substrates must be treated with a suitable primer as shown in the table below:

Kerakoll Levelflex Fibre substrates

SubstratePrimersDilution with water
Cement-based screedsPrimer A EcoDiluted
Calcium sulphate- based screedsPrimer A EcoUndiluted
ConcretesPrimer A EcoDiluted
Ceramic floors ceramic tilesKeragrip EcoUndiluted
Flooring grade plywoodPrimer A EcoDiluted
Gypsum fibre or fibre-cement panelsPrimer A EcoDiluted
Metal substratesKeragrip EcoUndiluted


Pour 4.5 – 5.0 l of clean water into a clean container; then pour in a bag of Levelflex Fibre, while shaking. Mix with a mechanical mixer until a smooth, lump-free and self-levelling mixture is achieved. Larger quantities of Kerakoll Levelflex Fibre may be prepared in suitable mixers. After the first mixing, it is advisable to leave the mixture to rest for approx. 2 minutes and then mix again briefly. Levelflex Fibre features a high degree of self- levelling capacity. Adding extra water does not improve the workability of the product, and may cause shrinkage in the plastic phase of drying and result in less effective final performance with a reduction in surface hardness, compressive strength and adhesion to the substrate.

Instructions for use


Kerakoll Levelflex Fibre is generally applied with a flooring trowel. The use of a spike roller or aeration roller can be used to further improve the surface finish of Levelflex Fibre by removing entrapped air from the mixture. In the case of low temperatures and high humidity it is advisable to keep the environment ventilated during application and during the hours immediately following application, in order to avoid the formation of condensation on the surface of the self-levelling product during the setting phase. Protect from air currents at actual floor level.


Residual traces of Kerakoll Levelflex Fibre can be removed from tools using water before the product hardens.


Joints: perimeter expansion must be allow for in the application of self levelling compounds. Perimiter expansion edging strip must be installed along the whole perimeter of the room, on the walls and on any other vertical elements protruding from the supporting layer. Large and continuous surface areas need to be fractionised as soon as they can withstand foot traffic so
to create areas < 100 m2 with 10 m maximum individual size. All movement or expansion joints located in the substrate must be respected.

Overlaying: if an additional application of Kerakoll Levelflex Fibre is required once the initial application has been completed, the first installation layer must first be hardened and ready to accept foot traffic and additional application, this is generally after 3 hours. The initial layer of Levelflex Fibre must be primed with a neat coat of Kerakoll Primer A Eco prior to subsequent applications.

Kerakoll Levelflex Fibre technical data

Appearancegrey pre-mixed
Apparent volumetric mass≈ 1.35 kg/dm3
Mineralogical nature of inert materialsilicate - crystalline carbonate
Grading0 – 600 μm
Shelf life≈ 12 months from the date of production in the original, unopened packaging; protect from humidity
Mixing water≈ 4.5 - 5.0 l / 1 bag 20 kg
Specific weight of the mixture≈ 2.03 kg/dm3
UNI 7121
Self levelling time≈ 20 min.
End setting time≈ 3 hrs
Temperature range for applicationfrom +5 °C to +35 °C
Maximum thicknessbetween 3 and 50 mm
Foot traffic≈ 3 hrs
Waiting time before laying:
- ceramic, porcelain, natural stone and mosaic tiles≈ 3 hrs
Coverage≈ 1.67 kg/m2 per mm of thickness

Kerakoll Levelflex Fibre performance

VOC Indoor Air Quality (IAQ) - Volatile organic compound emissions
ConformityEC 1 Plus GEV-EmicodeGEV certified 17673/11.01.02
Resistance to:
- compressive after 24 h>= 7N / mm2EN 13892-2
- compressive after 7 days>= 12N / mm2EN 13892-2
- compressive strength after 28 days>= 20N / mm2EN 13892-2
- flexural after 28 days>= 6N / mm2EN 13892-2
Classification / ConformityCT-C20-F6EN 13813


  • Product for professional use
  • abide by any British standards and industry regulations
  • do not use Levelflex Fibre to correct substrate irregularities greater than 50 mm in a single coat do not add other binders, additives or pigments to the mixture
  • low temperatures and high relative humidity lengthen the drying time and can saturate the environment; this may have a negative effect on the quality of the surface of the self-levelling product
  • an excessive quantity of water will reduce strength and the drying time
  • respect any movement or expansion joints present in the substrate
  • if necessary, ask for the safety data sheet for any other issues, contact the Kerakoll Worldwide Global Service

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Gary Dawson
3 days ago

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2 weeks ago

They actually answered the phone, were polite, knowledgeable and the order was delivered in full and on time. Would fully recommend both on price and service. Thank you.

a month ago

BTP very helpful in supplying a pallet of floor leveller. I needed it on the Saturday, but didn’t want it sitting on the driveway for several days. I called and they recommended ordering for Thursday to give a day’s grace in case of any delivery issues. In the event the pallet arrived on Thursday as requested. Reliable and good value

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3 years ago

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3 years ago

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3 years ago

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3 years ago

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3 years ago

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3 years ago

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