Kerabit Kumisaumo Sealing Compound

Kumisaumo is hot-applied modified bitumen compound that contains no substances hazardous to health.

Kumisaumo is highly elastic irrespective of the temperature, making it suitable for winter conditions.

Kumisaumo can be used for demanding special applications.


Manufacturer / Manufactured for Nordic Waterproofing Oy/Lohja Plant
Country of origin Finland
Need for materials depending on target
Packages / pallet 49 pcs
Weight / package 21 kg
Weight / pallet 1054 kg
Density approx. 1100 kg / m3
Penetration, 25 °C 45...80 1/10 mm
Softening point 100...110 °C
Flashpoint > 250 °C


Repairing movement joints.

Instructions for use

Kumisaumo sealing compound must be heated using a bitumen pot equipped with a thermometer, a thermostat and an automatic heat regulation system. The temperature must not exceed 210°C. Sealing and filling the cracks is best carried out using a bitumen pouring can and, when performing insulation work, spreading sealing compound using a hand-operated snow plough. It is of paramount importance that the surfaces to be repaired are dry and dust-free. When sealing, adhesion is enhanced if the surfaces are heated or if the Kerabit modified bitumen solution is applied to them.

For more detailed instructions, consult the product description.