When it comes to solar racking systems for commercial roofs, there are basically two categories: ballasted and penetrating. Silverback falls into the penetrating category, but with a twist. Our twist is that we actually know how to properly penetrate a roofing system without creating a leak. We like to refer to our system as integrating, rather than penetrating. For more information on that subject, please see our article titled Why Roof Penetrations Are Actually a Good Thing.