I am in the process of stripping old shingles, putting plywood over old
sheathing and adding new shingles. The roof is over an attic that was
converted into a bedroom. The current roof has a ridge vent but no
Soffet vents. I was told that the best way to add a soffet vent is to
put strapping down between the plywood and old sheathing in order to
create a ventilation space. Then cut holes in the top of the old
sheating over the eaves. Then put he plywood down, cap the space and
add the vents on the bottom side of the eaves. Is this the correct way
to do this???

Thanks in advance!