Pennsylvania Street: Residential roof in San Diego County, Owens Corning 40 year Composition shingle. It may appear like grunt work and that anyone could do it, but is one of the most difficult phases of the project. These guys not only work hard on removing old roofing systems, but also keeping the grounds clean from falling debris. If appropriate methods are not utilized, your attic, landscape, or hardscape may never be the same. Preman Roofing does all of our own tear-offs in house so we can control difficult phases as professional as possible.