The work performed is amazing. The attention to detail in the installation process made a very difficult project simple and timely. The roof system installed is a top of the line product that has added value to the building. Columbia Roofing is professional, courteous and extremely easy to work with. They ensured that the product was installed per manufacturers specifications and this generated a valuable warranty for the system. The friendly sales team are easy to work with and address any concerns quickly and concisely. Their quoting process is accurate and collaborative to find cost effective opportunities to ensure the roof system selected is the proper system for each application. Each time a visitor to the building sees the roofing system they are impressed with the quality and workmanship. Columbia Roofing & Sheet Metal is the preferred vendor for all roofing projects in my portfolio.