We have a historic house with a tin-plated iron/steel roof built in 1910.
We are having a water leakage problem in three of our windows. Three roofers have looked and attempted to fix this but no success yet? See Images below. We just had new gutters installed but still have water coming into the windows below the roof, pictured below. All three windows have a drainage system like the one pictured above the window. No visible holes in the roof? We have attempted to place Acryamax on the top roof around vents and any rusty spots but still no luck solving the problem?
Any advice would be appreciated.