What is Bitumen 105/35?
Oxidized Bitumen 105/35 is an air-blown bitumen grade combining an ultra-high softening point of 105–115°C with a moderate penetration of 30–40 (0.1mm). This rare specification is difficult to achieve, since most 105°C-plus grades exhibit lower penetration, making Bitumen 105/35 a premium choice for industrial membrane manufacturers.
Oxidized Bitumen 105/35 is used in heavy-duty road construction, industrial surfaces, and long-lasting infrastructure projects that demand exceptional strength and thermal stability. Its balance of high softening point and flexibility also suits roofing, waterproofing membranes, and industrial membrane manufacturing requiring both excellent durability and long-term workability.
Black Rock Bitumen supplies Oxidized Bitumen 105/35 through a specialised air-blowing process that achieves this rare balance of hardness and flexibility. Sourced from certified refineries and shipped through our Dubai logistics hub, our Oxidized Bitumen 105/35 delivers dependable, export-grade performance for demanding industrial and infrastructure applications.



