Existing Corrugated Roofs Home About Us Our Story Hugger Advantages Articles & Editorials Terms and Conditions of Sale Roof Hugger Warranty Gallery Retrofit Basics Retrofit Do's... & Don'ts Basic Roof Design Hugger Applications Green Retrofit Energy Efficiency & Renewable Solar Dept. of Defense Research Project Resources Hugger Advantages Helpful Documents... finished with a galvanized coating that has not withstood the elements. Most being retrofitted today, display their rusted steel substrate. Corru-Fits structurally correct design...