Sopro VF 419 – VarioFlex® Silver Large-Format Flexible Tile Adhesive

A silver-grey, highly flexible, high-coverage, extra-rapid-set, cementitious thin, medium and floating-bed tile adhesive for the efficient laying of tiles and discoloration-sensitive natural stone units with full rear-face wetting using floating method. Particularly suitable for large-format units and also on calcium sulphate screeds. With high crystalline water binding capacity. Low-chromate to Regulation (EC) No 1907/2006, Annex XVII.

Field Of Application

Stoneware and fully vitrified stoneware tiles, clinker floor tiles, mosaic, light-coloured, discoloration-sensitive and translucent natural stone units, cast stone units, terracotta, dishing-prone, resin-bonded tiles, e.g. agglomerate tiles. Particularly suitable for large-format fully vitrified stoneware units. For fast-track refurbishment/renovation on tightly scheduled projects. For use in private housing as well as in commercial and industrial facilities subject to high mechanical loads.

Have a look at the properties of VF 419 VarioFlex® Silver Adhesive

Suitable Substrates

Concrete, min. 3 months old; cement screeds; calcium sulphate screeds; mastic asphalt screeds (indoors); board subfloors; heated floor constructions (cement and anhydrite screeds); strong existing ceramic, natural stone, terrazzo and cast stone coverings. Waterproof membranes using Sopro FDF flexible sealing compound, Sopro DSF 523 one-component flexible sealing slurry, Sopro SF 623 one-component flexible rapid-set sealing slurry, Sopro DSF 423 two-component flexible sealing slurry or Sopro TDS 823 two-component turbo sealing slurry.


Silver-grey, highly flexible, high-coverage, extra-rapid-set, highly polymer modified, cementitious thin, medium- and floating bed tile adhesive meeting C2 EF S1 requirements to DIN EN 12004, with original Rhenish trass. For installation of ceramic floor coverings, in particular for discoloration-sensitive and/or translucent natural stone tiles, on all substrates. Suitable for large-format fully vitrified stoneware. Ideal for large-format fully vitrified stoneware due to its rapid-set properties in conjunction with a nonetheless long open time. Rapid-set properties make it ideal for fast-track or tightly scheduled projects where rapid reuse of floor space is required. With high crystalline water binding capacity.

Related Downloads

icon-pdf TDS Sopro VF 419 – VarioFlex® Silver Large-Format Flexible Tile Adhesive

icon-pdf TDS SMET_Tiling Onto Calcium Sulphate Floor Screed_System I

icon-pdf SMET Professional Tiling Systems Brochure



Featured Benefits of Sopro VF 419 – VarioFlex® Silver Large-Format Flexible Tile Adhesive

• Early high strength, walkable and groutable after only approx. 3 hours
• Meeting C2 EF S1 requirements to DIN EN 12 004
• Silver-grey adhesive colour, also suitable for light-coloured, translucent natural stone types
• For deformation-sensitive tiles
• For large-format units
• Extended open time ≥ 30 minutes
• Ideal for use in conjunction with tile levelling systems
• Consistency adjustable for thin, medium- and floating-bed laying
• For floors, indoors and outdoors
• EMICODE system of GEV (German Association for Control of Emissions in Products for Flooring Installation): EC1PLUS R (‘very-low-emission-plus’) rating
• DGNB (German Sustainable Building Council): Top quality level 4, Line 8*
• CE Marked

Technical Details Sopro VF 419 – VarioFlex® Silver Large-Format Flexible Tile Adhesive

Colour Silver Grey
Mixing Ratio (water only) Thin-bed adhesive: 5.5–6.0 ltr water : 25 kg Sopro VF 419
Medium-bed adhesive: 5.0–5.5 ltr water : 25 kg Sopro VF 419
Floating-bed adhesive: 6.5–7.5 ltr water : 25 kg Sopro VF 419
Coverage Approx. 1.3 kg/m² per mm coat thickness
 Maturing Time 3-5 minutes
 Pot Life 30–45 minutes depending on consistency; stiffened mortar shall not be retempered by addition of water or fresh mortar to restore workability.
 Open Time  Approx. 30 mins
Walkable/Grouting After approx. 3 hours or after setting of adhesive; take measures to spread loads over floor.
Loading After approx. 5 hours
In commercial facilities – After approx. 2 days
In areas subject to high wet exposure – After approx. 3 days
For underwater applications – After approx. 10 days
In conjunction with floor heating – After approx. 14 days
Application Temperature


Specified Times

Between +5 °C and +25 °C (substrate, air, material)


Apply for normal temperature range of +23°C and 50% relative humidity; higher temperatures shorten and lower temperatures lengthen these times

Tools/ Tool Cleaning Mixing attachment, notched trowel with suitable serration, medium-bed trowel;
tile levelling systems, e.g. manufactured by Karl Dahm; wash tools with water immediately after use.

Available in 25kg bags with 40 bags per pallet.