Oxidized Bituminous Waterproofing Membrane (BOF)

Oxidized bitumen, also known as blown bitumen, is manufactured through either a continuous or staggered blowing process. In this controlled environment, heated penetration-grade bitumen undergoes a process of oxidation by being blown with air, regulating the oil content in the bitumen. This type exhibits lower stability and a shorter effective lifespan, resulting in a higher penetration grade and reduced insulating properties against water and oil. Despite these characteristics, its economical price makes it a popular choice for insulating less critical areas within buildings. Additionally, it finds widespread use in applications such as ceramic coating, roofing sheets, etc.