I have a 1989 house with a cathedral ceiling built 2x10 rafters 24" oc. I am about to redo the roof, which would give me a chance to pull up the decking and improve the insulation.
I am guessing the insulation is fiberglass batt with no ventilation baffles. What I want to do it put in the plastic baffles to ensure good air flow from the soffit to the ridge vent.
One concern is since these baffles are plastic and not breathable, will I be trapping moisture in the insulation below them?
Also, should I bother with baffles where there are skylights fit between two joists with no way for air to pass them?