Sopro HPS 673 Bonding Primer

Special, light-grey, polymer dispersion-based, silica sand-modified, solvent-free primer, applied as bonding layer to impervious, smooth and non-absorbent substrates prior to surface filler application or tilelaying. Particularly suitable for laying on existing ceramic coverings. Also used as bonding primer on timber and mastic asphalt screeds and existing firmly adhering adhesive residue, lacquers/varnishes and PVC coverings.

Coverage: Approx. 150 g/m² depending on substrate.


Related Downloads

icon-pdf  TDS Sopro HPS 673 Bonding Primer 

icon-pdf  SMET Professional Tiling Systems Brochure

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Benefits Sopro HPS 673 Bonding Primer

  • For walls and floors, indoors and outdoors
  • Water- and solvent-free
  • High coverage
    Drying time: 1-2 hours
  • Suitable for use in conjunction with wall and floor heating
  • Approved as system component for shipbuilding applications GISCODE (German hazardous substances classification): D1
  • DGNB: Top quality level 4, Line 9, based on DGNB (German Sustainable Building Council) criterion “ENV1.2 Local Environmental Impact” (2018 version)
  • For healthy living: Recommended by Sentinel Haus Institut

Field Of Application

For preparation of dense, smooth, closed-pore substrates to guarantee adhesion of surface fillers and tile adhesives. Sopro HPS 673 bonding primer also prevents unwanted chemical reactions between old, organic PVC, carpet, parquet or adhesive residue and hydraulically setting surface fillers and adhesives.When applied as pretreatment to timber materials, Sopro HPS 673 prevents swelling of substrate. Application of Sopro HPS 673 provides surfaces with good key. Not suitable for underwater applications.

Suitable Substrates

Smooth and non-absorbent substrates, e.g. existing ceramic tile, terrazzo, natural and cast stone coverings; mastic asphalt screeds without sand blinding, asphalt tiles, magnesium oxychloride (magnesite) screeds, non-absorbent concrete; timber substrates, e.g. particleboard and scuff-sanded parquet. Existing, firmly adhering uPVC and linoleum flooring, concrete sealers and screed coatings, adhesive residue from PVC flooring, carpeting or parquet.

Available in Buckets: 10 kg, 5 kg, 3 kg, and 1 kg pots (10 No. in box)

For a comprehensive range of primers, and sealers including DPM Barrier coat, contact SMET and to view a whole plethora of SMET jobs using these primers and sealers, click this link