As roofing, waterproofing and mechanical insulation contractors, we have been in business since 1934 in Rockford, IL, serving the north-central Illinois and Southern Wisconsin regions. Our company takes great pride in our quality workmanship. Most of our foreman have been with us for more than twenty years. It is very important to us to provide continuing education for our crews, which ensures that all men are up to date on the most recent advancements in technology and application procedures. McDermaid Roofing and Insulating Co. has the skill and commitment to continuously perform at the highest levels, which is your assurance of a quality installation every time. • Air & Vapor Barriers • Built-Up Roofing • EPDM Rubber Roof Systems • Infrared Surveys • Mechanical Insulation • Metal Roof Restoration • Pipe and Duct Covering • Photovoltaic Solar Roof Systems • Roof Maintenance • Single-ply Roofing • TPO / PVC Roof Systems • Waterproofing / Dampproofing