Bitumen Sheets & Trim

Bitumen sheets, also known as bituminous sheets or roofing felt, are commonly used in roofing applications as an underlayment or waterproofing layer. They are typically made from a base material (often fiberglass or organic felt) saturated or coated with bitumen, a sticky, black, and viscous petroleum-based material. In addition to bitumen sheets, there are also bitumen-based trims and flashings used in roofing installations.