Suited for all absorbent mineral surfaces, sheet metal, wood and

bituminous roofing felt. It is suited as a primer for bitumen thick-film

sealants and cold-applied self-adhesive bitumen membranes, as well

as for overcoating old layers of bitumen (refurbishment of old thick film sealants and bitumen coatings).


KÖSTER Bitumen Primer is a cold-applied, low odour, solvent-containing bitumen primer. It contains a bonding agent admixture and

displays excellent penetration properties. It acts as a dust-binder and

bonding agent for subsequent hot or cold-applied liquid bitumen

coatings and self-adhesive membranes.

Features and Benefits:

  • Drying time is approx. 1 hour.
  • Low odour
  • Can be stored up to 1 year.
  • Density 0.88g/cm3

General information



Uniclass 2015

Pr_35_31_66_08 Bitumen primersPrimary


J21/320 Primer

J41/320 Primer