Thought I would add a short story to my roofing of my house I owned back in Oregon a I know some of you have done this yourselves .
After doing my last remodel on my house in the 70ies of adding onto the end and back side of my house ,,, I put on heavy shakes which was popular back then,
Then in 2005 with finding leaks in the roof around my sky lights I took all the 32 square of shakes off and went to asphalt shingles ,, I tore off all the shakes and my dad wheeled them up back and stacked them up.. Lots of wood stove kindling. (also had lots and lots of 1980 Mt St, Helens Eruption Ash in the shakes that was helping moss to grow..
I bought a Bostitch air gun tack nailer with the round rolls of tacks and put 4 tacks in per shingle ,,not 3 tacks per shingle like a lot of guys were doing back them who were in the business of roofing .