Modified bitumen roof systems?can be installed with the common torch method, asphalts, or cold adhesives. A standard SBS?modified bitumen roof system?is a two-ply?system?applied in rolls that overlap the edge of the previous roll.
Modified Bitumen (MB) roofing is an asphalt-based, close cousin of the Built-up-Roof (BUR) designed for buildings with low-slope or “flat” roof structures. Engineered modified bitumen roofing membranes originated in Europe in the mid-1960's and have been used successfully in the United States and Canada since approximately 1975. Modified Bitumen Roofing Systems are designed to withstand harsh exposure to extreme environmental elements. With five layers of protection, it’s one of the most trusted flat roofing systems used in the industry today. The framework for Modified Bitumen Roofing Systems is a five-layer combination of roofing components.