This is a short video on how the back side of a flat head axe can be far faster than the blade side. The blade side actually acts as a wedge and gets stuck in the wood, and roofing material. The back side (also known as flat side, or striking surface) simply pulverizes the roofing material and makes for a faster cut.
While a saw is easier, saws often break, won’t start, or run out of gas. The axe on the other hand works every time, which is why one must always come with you to the roof.
I have used this technique several times on several types of roof structures and it works great. I do not know who came up with it, but it was originally introduced to me by Capt. Dugan from the FDNY.
If you have any tips or tricks for roof ventilation please feel free to share them in the comments section. Stay safe and thanks for reading!