Hertalan ks143 is a one component bonding adhesive for adhering Hertalan EPDM roofing systems onto flat roofs. Typically the surface would be timber, concrete, bitumen coatings and approved coated insulation boards. We do not recommend the use of ks143 as an adhesive to steel and some faced or non“faced insulation boards. The adhesive consumption will amount to approximately 225-300 g/m2 (for a partially adhered system, applied on one side). Application KS143 Bonding adhesive to all types of substrate (central areas). Wood. Concrete. Bitumen. Insulation. Old felt. PVC.