What is Modified Bitumen?
Modified Bitumen roofing is an asphalt based roofing system commonly used on low slope or flat roof structures. This system is a close relative of asphalt built up roofing systems that were once the most common roofing system used in the commercial/industrial market. Typically, a mod-bit system will consist of two layers: a base sheet and a cap sheet. Most commonly the base sheet will be adhered to the roof deck and the cap sheet is then torched down using heat or cold adhered using a cold process adhesive. These are great roofing systems that are extremely durable but often are more costly due to the petroleum composition and the volatility in the petroleum markets.
What are Asphalt Shingles?
Asphalt shingles are the most popular roofing system used in the United States and there are dozens of colors and designs to choose from. Asphalt shingle roofing requires slope, so they are a great choice for many common building designs that have a structural slope to ensure proper drainage. Shingles are made of many layers and are available in varying thicknesses and durability ratings meaning there is a choice for every need and climate.