Enke Bitumenstop is a pigmented barrier primer that acts as a separating and protective layer between bituminous substrates and subsequent waterproofing or coatings. It reliably prevents the migration of plasticisers from bitumen, which can otherwise lead to discolouration, embrittlement or loss of adhesion – particularly in the case of Liquid plastic.

Bitumenstop should always be used when:

• older bituminous membranes or existing bituminous substrates are present,
• Enkopur, Enkolan or Betoncoat systems are to be applied over them,
• or, in the case of refurbishments, the age of the bitumen is unclear or its composition is unknown.

Particularly in existing buildings, Bitumenstop provides reliable protection against subsequent damage to the system.

Bitumenstop is suitable for absorbent bituminous substrates, e.g.:

• bituminous membranes
• bituminous coatings
• existing bituminous structures

Bitumenstop is not suitable for non-absorbent, impermeable substrates such as glazed metal or glazed tiles. In such cases, other bonding agents from the Enke system should be used.

Bitumenstop is a single component product and ready for use. It is applied by rolling or brushing; under suitable conditions, it can also be sprayed.

• Application temperature: +5 °C to +35 °C
• Drying time: dust-dry after approx. 30–60 minutes
• Can be worked over: after approx. 1–2 hours

Coverage is approx. 150–250 g/m², depending on absorbency and the substrate’s texture.

Once completely dry, Bitumenstop can be overlaid with the following Enke systems:

• Enkopur (liquid polymer waterproofing)
• Enkolan
• Betoncoat systems (depending on requirements and construction)

Bitumenstop ensures a permanent, system-compatible separation between the existing substrate and the new coating.