Save any Flat Roof by doing this

Any flat roof can be saved by installing the proper drainage system. A Flat Roof will last indefinitely if a proper drainage system is installed. See how I installed a unique drain system that has less maintenance than the conventional drains.
A flat roof is as good as its draining system. Bad drains cause roofs to leak and replacements are imminent.
Chapters:
0:00 Save Flat Roof by doing this
2:50 Several layers fiberboard build-up
4:50 Shoot into dumpster
5:54 All Roof USA is helping
6:19 Cutting Plywood for channel
7:15 Installing Base paper lining
8:00 Install Torch Down rubber
9:00 Roof after thunderstorm
9:47 Making a channel
12:39 Channels vs Build-up?