I would not just drill holes soffit vents are cheap and have screens to keep animals insects out.
Vaulted roof drill cross vent holes for ventilation.
Then drill a few one inch holes in the cross pieces along the middle of each 2x but not too close to the ends.
Roof vents choose one of the following products to meet the recommended exhaust nfva of 528 square inches.
The irc calls for a minimum of 1 in.
Hip roof venting although contrary to the advice given by the air vent corporation in their brochure regarding hip roofs and the unique ventilation dynamics i have installed a shingle over style ridge vent on the hips of 2 roof jobs using a lower profile vent than the shingle vent ii from air vent.
The entire length of the roof has a ridge vent.
They re selling cor a vent products but the explanations are good regardless.
Attic but you should know that.
They do make a good under fascia vent but gaf owens corning and other roofing suppliers do as well.
In a vaulted roof a ridge vent serves as the outtake or exhaust vent.
Roof venting 201 vent the roof deck if the attic space is conditioned or if a room has a vaulted ceiling the roof deck should be vented from eave to ridge.
Ventsure 4 foot strip heat moisture ridge vent.
The apex of the roof will be left without insulation as the vaulted ceiling will terminate into a 6 flat ceiling due to existing cross braces.
The roofers who have given me bids have all recommended either cutting holes in the soffit to install ugly pressed metal vents adding a bunch of vent boxes mushrooms both low and high on the slope and or.
Question is due to the roof over this room being a gable roof only 3 of the 10 rafter bays terminate to a vented soffit.
A healthy roof is a healthy house.
I suggest a 2 in.
Airspace between the sheathing and the insulation.
The ridge is about 40 feet long and there is currently a ridge vent but no other roof vents no soffit vents and no gable vents.
Vent the roof deck.
This pdf has a good explanation of how roof venting works.
The cool dry air that enters the soffit must have a place to exit.
If the attic space is going to be conditioned either for living or mechanical purposes or if a home design calls for a vaulted ceiling provision r806 3 in the international residential code calls for the roof deck above the space to be vented continuously from the eave to the ridge.
To be extra careful you might consider adding vents at the top and bottom of the roof soffit vents at the bottom and a soffit vent or shed roof vent at the top depending on the detail.