BF / Concrete for laying floors / concrete with antifreeze additive

  • For work at temperatures up to -10°C
  • Concrete class C25
  • Intended for the manufacture and repair of concrete and reinforced concrete structures
  • Suitable for heated floors
  • Excellent mechanical and climatic resistance
  • High durability in aggressive environments
  • Water and frost resistant


  • The base surface or moulds must not be frozen
  • The base must be firm, stable and without cracks
  • Clean the surface from loose and/or separable layers
  • Particularly dense and/or smooth surfaces should be treated with an abrasive material
  • Highly absorbent surfaces must be primed with SAKRET BG primer or SAKRET UG primer (diluted 1:3)
  • Especially smooth concrete surfaces should be primed with SAKRET QG primer
  • Mix SAKRET BF in a clean container with cold water (use warm water in winter conditions) until a homogeneous mass without lumps is formed
  • Follow all the preparation conditions of SAKRET BE indicated on the material package
  • After the ripening time (~3 minutes) mix again
  • When concreting, use non-absorbent or weakly absorbent forms
  • Provide a sufficient protective layer of reinforcement in reinforced concrete structures
  • For the surfaces of large horizontal structures, observe the intervals of deformation joints
  • Treat the moulds with mould oil
  • Place the concrete in the formwork evenly and seal
  • Apply the clone in the required layer thickness, seal, level and smooth
  • Do not fill the deformation joints with concrete!
  • The temperature of the construction mixture during concreting work must not be lower than +80C
  • Constructions must be covered immediately after the work is completed, first with waterproofing and then with heat-insulating material, for example - with polyethylene film and mineral wool plates
  • The temperature of any base or formwork must be such that the concrete does not freeze before reaching the critical or calculated temperature during hardening min. +5°C
  • Mortars with a class not lower than M5 can be used
  • All bricks and blocks must be cleared of snow and ice before laying
  • It is recommended to perform a thermal calculation of the structure to be concreted (cooling time of concrete, necessary thermal insulation properties, concrete setting temperature)
  • Above +5°C, antifreeze additives act as a hardening accelerator
  • The technical data refers to a temperature of +20°C and 50% relative air humidity. Lower temperature increases, higher - decreases the specified values
  • During the hardening phase of the mortar, protect from the sun, drafts and excessively high temperatures (>30°C)
  • Protect fresh adhesive from rain and too rapid drying
  • When the mortar has started to bind, no more water can be added!
  • Wash containers and tools with water immediately after processing the mortar
  • Hardened mortar can only be removed mechanically
  • Contains cement, reacts alkaline
  • Protect skin and eyes, follow technical instructions. If the mortar gets into the eyes, rinse with a large amount of water, if necessary, consult a doctor
  • Protect the packaging from weather conditions, store on wooden pallets, in a cool and dry place, cover torn packaging immediately


  • 25 kg / paper bags / 48 bags on a pallet
  • 1,000 kg / Big-Bag packaging / pre-ordered
  • 10,000 kg - 20,000 kg / mobile transport silo

Tehnical data

Compressive strength after 28 daysFire safety classStorage timeStrength classGrain sizeVolume of ready mortar (25 kg)Volume of ready mortar (40 kg)Consumption
25 N/mm²Euroclass A1 (non-flammable)12 monthsc25/30≤8mm~ 12,5 l~ 20 l80 kg/m² (if the layer thickness is 40mm)
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