bitumen | protective coating | moisture | masonry | metal | plaster
Short information
  • solvent-based bitumen protective coating
  • good coverage
  • resistant against aggressive media
  • resistant to temperatures up to +60 °C
  • can be brushed or sprayed on
200 ltr. / barrel
sufficient for:
EAN code
barrel pallet
approx. 500 m²
4 017228 004150
2 barrel
approx. 0.4 l/m² per coat, depending on the substrate condition (at least 2 coats)
Storage note
  • Cool and dry. Keep away from ignition sources. The product is not sensitive to frost!
  • in originally sealed containers 12 months

Status technical data sheet
11 May 2022

Areas of application
BORNIT® KTW protects concrete, masonry, plasters, wood and metals from penetrating moisture and aggressive liquids. The coat is resistant to heat.
BORNIT® KTW is an acid-proof, well covering protective coating against aggressive wastewater as well as numerous chemical substances, like alkalis, organic acids and salts.
BORNIT® KTW is applied in industrial silos. In liquid manure, slurry and silage effluent plants as well as biogas storage and filling plants, should be used BORNIT® Siloflex.
For better adhesion to concrete, masonry or plaster, use BORNIT® Bitumen Primer for priming.

Type and properties
BORNIT® KTW is a cold workable, spreadable and sprayable protective coating based on bitumen, solvent and special additives.
After thorough drying, BORNIT® KTW forms a water-impermeable, closed bitumen layer with good adhesion on the substrate, high plasticity and high thermal resistance.

  • good adhesion to the substrate
  • easiest handling, since manufactured ready for use
  • universally applicable, therefore numerous uses
  • economical and cost-cutting, due to low equipment and material costs and effort

The substrate must be stable, dry, clean, free from grease and free from separating substances.
Fresh concrete must have hardened for min. 28 days. Deposits, like concrete grout or chalking, must be removed with suitable measures, as e.g. sandblasting.
During the construction phase, no water must penetrate between substrate and coating.
Loose particles must be removed and defects repaired. Mineral and untreated substrates must be primed with BORNIT® Bitumen Primer (approx. 0.2 l/m²).

BORNIT® KTW is ready for use without warming, dilution or stirring up. For first-time coating or highly exposed surfaces, at least 2 topcoats are required. Upon application of several coats, let every layer dry thoroughly, the drying time depends on the weather. The processing temperature (ambient and substrate temperature) should not be below +5 °C and not above +35 °C. The final resilience is only achieved after complete and thorough drying (complete evaporation of the solvent), e.g. upon use in stables after approx. 5 days. Prior to putting objects into operation, e.g. in the connection area of pipes, these must be thoroughly flushed after thorough drying of the coats.
Only use in well-ventilated outdoor areas and observe the current version of the Technical Rules for Hazardous Substances (TRGS).

BORNIT® KTW is not a coating according to DIN 11622 and according to the Ordinance on Installations for Handling Substances Hazardous to Water (AwSV Appendix 7).

approx. 0.4 l/m² per coat, depending on the substrate condition (at least 2 coats)

Product data in brief
Product type
bitumen coating
bitumen, solvent, additives
Density at +20 °C
0.91 - 0.95 g/cm³
spreadable, sprayable
Heat resistance
resistant up to +60 °C
small or large brush, spraying equipment (airless)
Thorough hardening time
8 hours at +20 °C
BORNIT® MultiClean Spray, BORNIT® MultiClean, BORNIT® Bitumen Cleaner
Cool and dry. Keep away from ignition sources. The product is not sensitive to frost!
Shelf life
in originally sealed containers 12 months
VOC category
2004/42/EG g/Lb: < 350 g/ltr.
Actual permissible VOC content
< 350 g/l
Hazard class according to ADR
entzündbare Flüssigkeiten (Flam. Liq. 3)
Acc. to Industrial Safety Regulation (BetrSichV)
Flash point
36 °C

60 %

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

In originally sealed containers storable for 12 months. The product is not sensitive to frost!

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).

The above information replaces all previous technical information about the product. Thus, this information is no longer valid. The details have been compiled according to the latest state of application technology. Please observe, however, that, depending on the state of the construction object, deviations from the method of application suggested in the datasheet may be required. Unless agreed otherwise in individual contracts, any information contained in the datasheet shall be non-binding and thus does not represent an agreed product constitution. We reserve the right to any changes in the information contained in this datasheet anytime.

UFI 3Y00-R0CF-700U-35NR

Safety Data Sheet Poison Information Centre , 24h: +49-361-730730

ERFURT - Poison Control Centre Erfurt, Joint Poison Information Centre of the federal States of Mecklenburg-Western Pomerania, Saxony, Saxony-Anhalt and Thuringia; ggiz@ggiz-erfurt.de; www.ggiz-erfurt.de

-     What: name of the substance or product as precisely as possible, etc.
-     How much: as exact a quantity as possible
-     Who: Age, weight, sex and condition of the person(s) concerned.
-     When: Time of the event
-     Where: Place of occurrence
-     How: ingestion, inhalation, skin contact, etc.
-     Why: accidentally or intentionally

recommended, personal protective equipment: