Mullen Roofing Company is a professional "service company" that specializes in the business of commercial roofing and waterproofing on existing occupied facilities. We are specialists at re-roofing facilities while they are open for business, our preventive maintenance and diagnostic reports are without equal in the industry and our emergency repair team is designated “first responder” by the worlds largest retailer for disasters in NJ. Regardless of your problem, if you are a building owner or manager, "We are at your service."