BORNIT® Triangle Tape

Bitumen | Roof area | Foundation area | Fillet | permanently elastic
short information
  • Fast, reliable sealing of the coving in the foundation and roof area
  • Waterproof and permanently elastic in connection with bitumen thick coatings, cold self-adhesive or welding strips
  • No waiting time for follow-up work, as it sticks in the throat immediately after being caught in a flame
  • Problem-free connection of the cross-sectional seal (wall barrier) to the vertical seal
Triangle Tape
25 m / box
sufficient for:
EAN code
euro pallet
25 m
4 017228 00056 5
24 box
1 m per linear meter
storage note
  • Not sensitive to frost! Keep cardboard packaging dry!
  • in originally sealed containers 12 months

status technical data sheet
09 November 2020

areas of application
BORNIT® Triangle Tape is suitable for the quick and safe formation of fillet welds in the transition area between components standing at right angles to one another (e.g. between floor slab and rising wall before welding and cold self-adhesive sheets as well as PMBC) and for sealing edge joints and unevenness between precast concrete elements.

Priming with BORNIT® Bitumen Primer, BORNIT® Grundbit or BORNIT® Basement Primer is recommended.

type and properties
BORNIT® Triangle Tape is a fusible and highly flexible elastomer-bitumen tape for secure and easy joint sealing and fillet formation in building construction and civil engineering. BORNIT® Triangle Tape is elastic, ageing-resistant and easy to apply.
Using BORNIT® Triangle Tape, there is no waiting time (drying time) between fillet formation and sealing, since a watertight welded connection is formed with the substrate immediately after cooling.

  • faster work progress due to short drying times
  • easy to process

The substrate must be firm, clean, dry and free from any loose particles or separating substances. In order to achieve good adhesion and secure fusion of the tape with the substrate, priming with BORNIT® Bitumen Primer or BORNIT® Basement Primer, resp., is recommended. This is usually also applied for the subsequent surface sealing and is brushed on or sprayed on with good coverage.

Note: Especially solvent-containing primers (e.g. BORNIT® Bitumen Primer) must be completely dry and flashed off prior to applying BORNIT® Triangle Tape!
Lay out BORNIT® Triangle Tape and cut to length. In the corner area, the tape can be cut to mitre, as required. Butt joints are connected by fusion. Subsequently fuse the attachment surface of the tape at one end with a propane gas flame over approx. 30 cm and firmly press on the tape immediately. Once this first attachment has cooled down, evenly heat the tape in the fillet until the surface melts and continuously press it into the molten pool. Finally, if necessary, apply the flame across the tape once again for fusing the edges until secure fusion with the substrate becomes apparent.
In case of a mitre cut in the corner area, pay attention to good adhesion of the abutting edges!
Subsequent work can be started after only a few minutes (cooling down of the fusion).

Technische Zeichnung
Profile tolerances up to 10 % are due to production technology!

1 m per linear meter

product data in brief
product type
bituminous, polymer-modified sealing tape
bitumen, additives, rubber
density at +20 °C
1.10 g/cm³ (according to DIN 52 004)
softening point acc. to cone/ring
approx. +110 °C
18 x 35 mm (25 x 25 x 35 mm) Other sizes on request.
Gas burner
BORNIT® MultiClean Spray, BORNIT® MultiClean or BORNIT® Bitumen Cleaner
Not sensitive to frost! Keep cardboard packaging dry!
shelf life
in originally sealed containers 12 months
hazard class according to ADR
flash point
> +200.0 °C
health and fire protection, occupational safety
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.

The product can be stored for 12 months. Protect the boxes from moisture and direct solar irradiation or heat, resp.!

disposal note
Only recycle completely empty containers. Material residues can be disposed of according to AVV-ASN: 170302 (bituminous mixtures, except for those falling under 170301).

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.
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