Kerabit 3000 U is an underlay membrane in multi-layer membrane system, glued with molten bitumen.

The carrier consists of polyester. Sand granules on the top both side of the membrane.


Manufacturer / Manufactured for Kerabit Oy, Lohja plant
Country of origin Finland
Conformity marking CE mark
Reaction to fire Manufacturer’s fire testing certificate
Fire Classification


Manufacturer’s declaration of conformity Kerabit modified bitumen roofing materials
Quality control Quality control agreement between the Plant and Eurofins Expert Services Oy
Nominal thickness approx. 2,5 mm
Nominal weight 3000 g/m²
Weight of the supportive layer 170 g/m² (+/- 10 g/m²)
Supportive layer Polyester
Rolls size 1 x 10 m / 10 m²
Packages / pallet 31 rolls
Weight / package 30 kg
Weight / pallet 955 kg

Handling and storage 
Modified bitumen membranes are to be stored on pallets in a dry and cool place. Use a plastic hood or tarpaulin for protection. When the outdoor temperature exceeds +40°C, the rolls must be protected from sunlight.

The product is used as underlay or intermediate layer of multi-layer roofing and water pressure insulation.