Modified membranes are asphalt-based and are typically found installed with one or more base or underlying interplies. This is the most common system for residential roofs. Modified products are typically either smooth surfaced, granule surfaced or foil-faced. Additionally, they may be field surfaced with a coating or a flood coat of asphalt and aggregate. The typical lifespan for modified roofs are relatively low at 8-15 years. Contact us to learn about our roofing renovation for modified roofs.