Bids for our roof (4/12 pitch in Minneapolis) disagree on venting needed.
Currently have 2 turbine vents and several smaller box vents. Contractors agreed we have enough soffit vents but they need to be cleaned.
One says we need to pull out the turbine vents and install ridge vent, the other said that 2 more turbines and a couple of “L 750”(?) or similar vents would do the job.
The bid with the ridge vent was considerably higher and the budget is tight.
Any reason why one would be better than the other?