The problem: This flat roof had been patched over and over in the same spot. All those layers of repairs built up into small ridges, almost like little walls. Instead of draining off the roof, rainwater got trapped behind them and pooled there, leaking slowly into the home.
What we found: Once we tore off the old roof, we found the paper-faced insulation soaked through and the drywall rotted and covered in mold.
How we fixed it: We tore off every old layer and all the built-up patches down to the structure, pulled out the wet insulation and the moldy, rotted drywall, installed a new flat roof with a smooth, even surface, adjusted the gutter slope so water flows to the downspouts, and extended the termination bar and flashing where the brick wall meets the flat roof.