Underlay sheet

Katepal K-MS 170/4500

Katepal K-MS 170/4500 is a fully torch-on underlay sheet of TL2 classification. It has a fine sand on the top and torch-on bitumen under a thin meltable protective film on the bottom surface. The top surface of the product includes a 100 mm wide overlapping seam.
Instructions and Materials

Field of use

Katepal K-MS 170/4500 is an underlay sheet for multi-layer roof applications. It is fully or partially torched onto the substrate. K-MS 170/4500 meets TL2 product class requirements, and its reinforcement layer consists of polyester fabric. The membrane’s top surface is coated with fine sand. The bottom surface has torch-on bitumen protected by a meltable plastic film. K-MS 170/4500 meets Broof(t2) requirements for tested structures with classified Katepal membranes

Handling and storage

Katepal products should be stored protected from direct sunlight and moisture. The products should be handled with care before installation. Roll products should be stored in an upright position. Rolls transported in a horizontal position should be stored upright after receiving the order. Pallets must not be stacked on top of each other. Pay attention to safe lifting: lifting instructions for the pallets can be found on each pallet (QR code on the plastic wrap of the pallet).

Technical details

Product dimensions 1 x 8 m
Packages per pallet 25 pcs
Covering 7.2 m²
Package weight 36 kg
Bottom surface Torch-on bitumen
Product class TL2
Vapour barrier product class BH1
Underlay product class AKE
Installation method Mechanical fastening, Torch-on
Product numberEANPackage weightSize of sales unit (m²)Pieces per palletDimensions
26811641744326811136 kg7.2 m²25 pcs1 x 8 m

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