For anyone with a house that has an older exposed soffit system (i.e. with a blocked header), it’s either put in some form of low to the header wall intake system, add a ‘true’ intake where the insulation doesn’t block it, or end up with a voided warranty.
That means the addition of a ridge vent or other powered exhaust system will also need to be addressed.
But what if someone has the Golden Pledge warranty filed with the right # of products, but the job doesn’t allow for ventilation? In particular, I’m thinking of those 3’ short Mansard walls / roof edge systems (where there’s usually a parapet wall directly behind the Mansard system).