Ventilation in Cape with developed attic
Hi - We've recently bought a cape which has a developed attic and knee walls. My question is how I can properly ventilate our attic space. I'd like to install insulation baffles that run from the soffits up to the peak. The problem is with the sloped ceiling which currently have batt insulation. Is there a type of "rigid" baffle that I could put on the sloped ceiling without having to either pull off the roof sheathing or pull down the drywall on the inside? I thought that I might be able to remove the existing batt insulation on the ceiling, install baffles, and then re-insulate the slope ceiling with expandable foam or blown in cellulose through holes through the interior dry wall. Unfortunately, I can seem to find a solution to the ventilation problem since i can't really staple the baffles to the roof.
I know this is a problem with cape's and was hoping someone had experience with this.
Thanks for the help.