Road Construction Materials


BORNIT® Asphalt Primer

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Quick Facts

BORNIT® Asphalt Primer
Primer or adhesion promoter for use with BORNIT® Cold Sealing Compound in asphalt joints, 2-component, epoxy resin-based, for non-absorbent, mineral substrates, drying time at least  6 hours, apply grouting after primer is completely dry.

Color: yellowish-transparent

4 017228 000152 6800000506 1 Liter single
approx. 0.02 to 0.04 lper linear meter of joint
BORNIT® Asphalt Primer - 1 liter

Detailed Information

Areas of application
BORNIT® Asphalt Primer can be used on absorbent and non-absorbent substrates. Excellent adhesion properties are achieved, e.g., on freshly cut asphalt and various metals (VA steel, brass, aluminium). BORNIT® Asphalt Primer is particularly suitable as bonding primer, when the sealing is additionally exposed to thermal stresses up to +100 °C. The asphalt primer is not suitable for asphalt surfaces, which are additionally exposed to chemical stresses, e.g., by oils, solvents or fuels, like petrol, diesel or the like.

Type and properties
BORNIT® Asphalt Primer is a two-component adhesion promoter for polysulphide sealants on problematic substrates or for special conditions of application, resp.

Product advantages
• easy to mix
• less equipment and labor required for processing

The substrate must be dry and free from dust, grease and any loose particles.

The components A + B are thoroughly mixed and the asphalt primer evenly applied with a brush. After a flash-off time of 2 to 6 hours (component temperature >+25 °C approx. 2 hours, <+10 °C approx. 6 hours), the sealant can be applied. The asphalt primer should have dried off as far as possible. It must be observed that no moisture film has formed on the primer surface due to undercutting of the dew point.

0.2 l/m²

Technical data

Chemical base Epoxy resin
Processing time Approx. 1 hour, at temperatures above +25 °C also less
Flash-off time 2-6 hours, depending on substrate and ambient temperature
Mixing ratio Component A to component B = 7:4 parts by weight
Consumption    0.02 to 0.04 l/linear metre depending on the dimensions of the joint
Colour    Colourless
GISBAU product code RE 2
VOC content comp. A <50 g/l
VOC content comp. B <330 g/l


System products
BORNIT® Round Cords
BORNIT® Cold Sealing Compound
BORNIT® Cold Joint Sealant

12 months in originally sealed packaging at storage temperatures below +25 °C.

Health and fire protection, occupational safety
For information on handling, safety and ecology, please refer to the current safety datasheet.

Forms of delivery
Combined container for components A + B)
1 l container    ……………………………………………    10 pcs. per box

Only recycle completely empty containers. Material residues of component A + B can be disposed of according to AVV-ASN: 080409 * (adhesive and sealing compound residues containing organic solvents or other hazardous substances).

This data sheet replaces and annuls all previous technical information about the product.
The information has been compiled according to the state-of-the-art of application technology. However, please note that deviations from the operation method proposed in this data sheet may be necessary depending on the condition of the construction object. Unless agreed otherwise in individual contracts, all of the information contained in the data sheet is non-binding and therefore does not represent the agreed properties and conditions of the product. We reserve the right to make changes to the information contained in this data sheet at any time. We recommend that you take a look at our website for information concerning any changes.

Chemical base epoxy resin
Period of workability 1 hour or shorter in the case of temperatures over +25°C
Hardening at least 6 hours
Mixing ratio Component A into component B = 7 : 4 (% by weight)
Consumption 0.02 to 0.04 l/linear metre depending on the dimensions of the joint
Colour colourless, slightly yellow
GISBAU-Produktcode RE 2
VOC-content Comp. A < 50 g/l
VOC-content Comp. B < 330 g/l


Note technical rules!


Necessary information – particularly for the use and the use of our products – please refer our brochures. We are at your personal disposal.