This was such a great roof to restore! We are so privilege that TAC Air hired us through the Hayden Company. This roof was in horrible shape with leaks all over the hanger. The inside of this hanger has many extremely valuable planes in jet in it. As soon as we applied our Metal Restoration Primer, most of the leaks were fixed. The TAC Air employees that work on the aircrafts in this hanger were thrilled that water was no longer pouring in. They had at least 30 different leaks before we came. Now they have none and their roof is now energy efficient!