I also have the Bosch Bulldog, and a long bit. We'll give that a try, as well as the magic saw blade. Looks like the bank gets to buy a few magix saw blades. The metal is fairly thin.

The City is requiring us to remove the roofing only, not the support structure, because it was peeling back from the south edge. (Simpson) The entire top of the structure is secured by a rectangular steel frame, with "I" beams running length wise, and box beams welded perpendicular to the "I" beams. Removing the roof removes any lift affect from the wind.

We have a person interested in buying the carwash to make it back into a car wash, and they would put a new roof on shortly. Unfortunately, though, the City needs the roof off per an abatement order handed to us once we took over the property. Either way, the roof has to come off.

Thanks for the ideas.