BORNIT^® 5M Primer

status technical data sheet

11th August 2026

Areas of application

BORNIT^® 5M-Primer is designed for the pre-treatment of bitumen layers to be applied hot as well as for laying roofing membranes and welded sheeting. BORNIT^® 5M-Primer adheres to concrete, masonry, plaster and almost all other substrates common in construction as well as to grease-free metal.
BORNIT^® 5M-Primer is not suitable for application on expanded and extruded polystyrene.
Note: According to Circular 11/05 of the German Building Trade Association (Bau-BG), emulsion-based bitumen primers (e.g. BORNIT^® Speedbit-Primer) are expressly recommended for work indoors!

Type and properties

BORNIT^® 5M Primer is a fast-drying, solvent-based bitumen primer that can be applied by brush or spray. BORNIT^® 5M Primer is used when short drying times are required in order to ensure rapid progress with the work.

Advantages

Surface

The substrate must be dry, clean and free of frost and grease. Loose components, damaged concrete and plaster areas as well as cracks and holes must be repaired beforehand.

Processing

The substrate must be dry, clean, frost-free and free from grease. Loose particles, defective concrete and plaster as well as cracks and holes must be removed or repaired, resp., in advance.
BORNIT^® 5M-Primer is applied by brushing, rolling or spraying it onto the substrate. Only perform subsequent work after complete and thorough drying! BORNIT^® 5M-Primer is manufactured ready for use.
Do not apply indoors! For the indoor area (e.g. floor sealing with welded sheeting), we recommend the solvent-free bitumen primer BORNIT^® Speedbit-Primer.

Consumption

approx. 0.2 l/m² (depending on absorbency and structure of the substrate, consumption may vary upwards or downwards, resp.).

Product type

bitumen primer

Base

bitumen, solvent

Solvent

white spirit, mixture of aromatics

Density at +20 °C

0.87 - 0.90 g/cm³

Consistency

spreadable

colour(s)

black

Application

brush, wide brush, spraying equipment (airless)

Cleaning

BORNIT^® Bitumen Cleaner, BORNIT^® MultiClean Spray, BORNIT^® MultiClean

storage

product not sensitive to frost

Shelf life

in originally sealed containers storable for 12 months Keep away from ignition sources!

GISCODE

BBP30

GISCODE link comp. A

https://www.wingisonline.de/showbetrandoc.aspx?gisbaunr=4/00000018217/000009&docid=2210&lang=de

VOC category

permissible according to VOC category h/Lb: 750 g/l

actual permissible VOC content

< 450 g/l

Hazard class according to ADR

flammable liquids (Flam. Liq. 3)

Acc. to Industrial Safety Regulation (BetrSichV)

flammable

Flash point

approx. +27.0 °C

Health and fire protection, occupational safety

Caution - Only use in well-ventilated outdoor areas. Not suitable for use in closed rooms or poorly ventilated pits!
Do not eat, drink or smoke while working, keep away from sources of ignition.

To ensure safe handling of the product, the physical, safety, toxicological and ecological information provided online, the information in the current safety data sheet and the additional information on the label must be read and followed before purchasing or using the product! The applicable regulations, ordinances and laws must be complied with.

In case of doubt, please contact the BORNIT^® application technology department or the BORNIT^® service hotline on +49 375 2795 123.

Storage

BORNIT^® 5M-Primer must be stored cool and dry. The product is not sensitive to frost! In the originally sealed container storable for 12 months. Keep the material away from ignition sources.

Disposal note

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

Note

The information set out above supersedes all previous technical information relating to the product. The previous information is therefore no longer valid. The details have been compiled in accordance with the latest state of the art in application technology. Please note, however, that depending on the condition of the building, it may be necessary to deviate from the working method recommended in this data sheet. Unless otherwise agreed in an individual contract, all information contained in this data sheet is non-binding and therefore does not constitute an agreed product specification. We reserve the right to make changes to the information contained in this data sheet at any time.

The product illustrations are to be understood as examples. No legally binding claim can be derived from them. We reserve the right to make changes to the product’s appearance.

Our packaging complies with the relevant legal requirements and with Regulation (EU) 2025/40 on packaging and packaging waste (PPWR). The technical documentation in accordance with Annex VII is available and can be provided on request by email to info@bornit.de.

GISCODE

BBP30

UN-number

UN 1993

Hazard pictograms

Signal word

Danger

Hazard-determining components for labelling

Hydrocarbons, C9-C10, n-alkanes, isoalkanes, cycloalkanes, <2% aromatics; hydrocarbons, C8- C9, isoalkanes

H-records

H226: Flammable liquid and vapour.
H304: May be fatal if swallowed and enters airways.
H336: May cause drowsiness or dizziness.
H412: Harmful to aquatic life with long lasting effects.

EUH-records

EUH066: Repeated exposure may cause skin dryness or cracking.

P-records

P102: Keep out of reach of children.
P261: Avoid breathing dust/fume/gas/mist/vapours/spray.
P271: Use only outdoors or in a well-ventilated area.
P301 + P310: IF SWALLOWED: Immediately call a POISON CENTER or doctor.
P331: Do NOT induce vomiting.
P501: Dispose of contents/container to a suitable recycling or disposal facility.

Recommended, personal protective equipment: