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NBS Source
Sopro HPS 673 Bonding Primer


For the preparation of dense, smooth, closed-pore substrates to guarantee adhesion of surface fillers and tile adhesives. For indoor and outdoor use. Suitable for walls and floors.


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 tile laying or surface filler application. It also prevents unwanted chemical reactions between old, organic PVC, carpet or parquet adhesive residue and hydraulically setting surface fillers and adhesives. When applied as pre-treatment to timber materials, it prevents swelling of the substrate

Features and benefits:

  • Ready-to-use and quick-drying.
  • For renovation and refurbishment.
  • High coverage.
  • Suitable for floor heating systems.
  • Solvent-free.
  • EC1PLUS very low emissionPLUS.

General information




Pr_35_31_66_30 Floor covering primersPrimary


M20/210 Lightweight gypsum plaster

M20/30 Lightweight gypsum plaster

M40/110 Tiling to

M40/5 Tiling to

Product range


Specification data - Floor covering primers



Approximately 150 g/m² depending on substrate.

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