Attic insulation question....

[Erni]

Going from memory of a picture from my dads attic, so this could be off. For the vents they installed plastic baffles extenders so that the insulation would not cover the vents. Then they just put in insulation as far over as possible.

Edit, foud them. Look for soffit vent baffle.

[MarkCO]

Hmm, if you leave those openings there instead of sealing them with caulking, I might be inclined to use soffit vents, like "Accuvent". Accuvents are cheap and easy to install, especially with what you have. Alternatively, you could enlarge some and seal some, like every other if that is convenient. If you push the insulation into the corners, you want it totally sealed, or with a soffit vent "chase" to allow the pulled in air to go up and over the insulation. With tacstrip and foam board, you can also make your own soffit vents if the manufactured ones won't fit right.

I'd never add cellulose loose, or rock wool loose or batt. Higher dust, critter, mold and mildew potential. The antimicrobial does diminish over time. Foam board with taped batt on it can be made to fit odd shapes if you want it to be able to be moved, removed at some point down the line. Otherwise, just buy bags of loose fiberglass.