Painted steel siding with a 40-year warranty is the perfect way to revitalize and to protect your building for years to come. I am Phil Dieter, and I have been installing steel siding for over 25 years. I am a second-generation builder who gained my experience with steel working for my father who was also a Rochester-based pole barn builder and contractor. I now specialize in commercial, agricultural, and industrial steel siding. Steel siding is extremely durable and maintenance-free with no painting required; it has a clean sharp look and makes old buildings look like new.