Casuprim HB Bonding Primer


A fast-drying, solvent-free dispersion-based primer incorporating silica sand for gypsum-based machine and hand applied plasters on concrete or similar low suction, smooth substrates. It is breathable, low odour and alkali resistant. Casuprim HB is also suitable as a primer on CA and CT screed substrates to receive Casufloor DE and Casufloor FS compounds.


  • Ready-to-use and quick-drying.
  • Ideal for pre-cast concrete substrates.
  • For walls and floors.
  • Solvent-free, EC1PLUS very low emissionPLUS.
  • For indoor use.

General information


Ready-to-use and quick-drying

Ideal for pre-cast concrete substrates

For walls and floors

Solvent-free, EC1PLUS very low emissionPLUS

For indoor use

Uniclass 2015

Pr_35_31_66_62 Plaster primersPrimary


M20/210 Lightweight gypsum plaster

M20/30 Lightweight gypsum plaster

Specification data - Plaster primers

Product Reference

Casuprim HB Bonding Primer

Standard product features

Technical characteristics:

  • Colour: Green.
  • Base: Acrylic dispersion with quartz sand.
  • Eu-Norm VOC Value (Cat. A/a): 75 g/l VOC in year 2007, 30 g/l VOC in year 2010.
  • VOC Value: ≤ 1 g/l.
  • Yield: Approx. 100 m² per 20kg, depending on substrate.
  • Drying Time: 1-2 hours.