M.I. Tech first assessed the damage, seeing where drywall would need to be replaced in addition to the window flashing, end dams, sills and sealing. M.I. Tech created a firm schedule and began to tackle each room individually on a precise schedule.
The building windows were stationary aluminum framed ‘storefront’ system style. Each of the approximately 5 foot square, one-inch-thick window units of insulated glass were set in either masonry or EFIS openings. These windows had been installed with pieces of flashing beneath them, which was supposed to divert water away from the building, much as a gutter directs water off of a rooftop. Unfortunately, the windows were installed without end dams, which let water leak from the bottom corners of the window into the building walls. Every window had damaged sheet rock and mold on the inside of the walls.
M.I. Tech pulled out the sheetrock and the windows, put in new flashing with end dams, caulked, taped, set the glass and aluminum frames back in the original openings and installed new matching AZEK sills.
“Sometimes when you build a building, somewhere, someone missed something,” David Sutherland of M.I. Tech Construction said. “These windows were supposed to have a system to direct water out of the building—like a gutter. You bend some flashing and put it in the sill and add end dams. “ With no left and right dams to stop it, the water was draining laterally into the walls.