
Examples of the different stacks that can be installed from inside buildings using the Kozy Kollar exhaust vent and stack-pipe flashing. (Photo courtesy of Kozy Kollar)
Tim Coyle remembers all too well the “good old days” of installing roof flashing for vents and stack pipes: Prop up a 36-foot extension ladder. Have someone hold the ladder. Climb up to the roof. Install the flashing. Have a person inside the attic push the pipe through. Rinse....