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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 dustbinder and as a bonding agent for subsequent hot or cold applied liquid bitumen coatings and self-adhesive membranes.

Suited for all absorbent mineral surfaces, metal sheets, wood and bitumen roofing felt. Suited as primer for bitumen thick film sealants and cold applied self-adhesive bitumen membranes, as well as overcoating old layers of bitumen (refurbishment of old thick film sealants and bitumen coatings).


Technical data:

  • Colour: Black.
  • Solids: Approximately 40% by weight.
  • Density: 0.88 g/cm³.
  • Processing temperature: 2–30°C.
  • Drying time: Approximately one hour.

NBS Specification

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This product is associated with the following NBS Create clause:
45-55-12/390 Bitumen primers

NBS Specification

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This product is associated with the following NBS clauses:

Product specification

An important note about specifying



Delta Membrane Systems Ltd


+44 (0)1992 523523

Product reference

Köster Bitumen Primer

Manufacturer details

Delta House,
Merlin Way,
North Weald,
Essex, CM16 6HR
Tel +44 (0)1992 523523
Fax +44 (0)1992 523250
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