Kerabit 2600 UB Fleece

Kerabit 2600 UB Fleece (K-MS 170/2600) is a modified bitumen underlay membrane and an underlay membrane for discontinuous roofings.

The product is used as an underlay membrane for machine-seamed and other steel and tile roofings, for example.

The carrier consists of strong polyester. The top surface of the product is coated with a polypropylene fibre cloth and sand granules at the bottom surface. The 100 mm wide  adhesive sections are located on the top and bottom surfaces, on opposing sides.


As far as using of torch-on membrane is allowed, Kerabit 3700 UT Fleece is well suited for details of standing seam metal roof (e.g. upstands, valleys and chimneys), where Kerabit 2600 UB Fleece with self-adhesive edge is used as underlay.

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 2,1 mm
Nominal weight 2600 g/m²
Weight of the supportive layer 170 g/m² (+/- 10 g/m²)
Supportive layer polyester
Surface type

PP fibre cloth on top surface, sand granules on bottom surface

Rolls size 1 x 10 m / 10 m²
Packages / pallet 31 rolls
Weight / package 26 kg
Weight / pallet 831 kg