In a recent site observation I noticed some rusting on the underside of an existing metal deck. The existing roof system is 5" concrete(overall thickness) over an unknown metal deck thickness. Our office is taking the stance that without proper testing of the deck it would need to be replaced. There is no way we can tell how the deck will perform in a loaded condition. I am seeing resistance from the contractor on replacing the deck. The contractor is wanting to grind the metal deck, prime, and paint. Grinding would reduce the properties of the deck and without qualified personnel, if they exist, to perform the proper grinding we are in jeopardy of ruining the deck further. It is my understanding the existing roof surface will be replaced thus reducing the risk of water infilltration. Does anyone know of a product that could be applied to the underside of the deck after is is cleaned to preserve it properties, and or make it stronger. I am thinking in similarities, in concrete rennovation fiber wrap can be used. Your information will be greatly appreciated.
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