Kerabit 3200 UTL Fleece is a line-torch-on (K-TMS 170/3200 torch-on) underlay membrane of product category 2 for multi-layer roofing. The product also serves as an underlay (AKE and AKK 1) for non-continuous roofing and as a vapour-barrier membrane (BH 1).
The carrier is of polyester. The lower surface of the product is torch-on bitumen and the upper surface is polypropylene non-woven fabric.
The product has been approved for use in buildings with the Nordic Swan Ecolabel.