I have a low pitched roof so there isn't that much room up there hands and knees only.I have no eave ventilation but the ventilation is through the front and back of the house through triagle metal caps cut into the wood siding. I already have some R19 in the ceiling joists but was wondering would putting it in the rafters against the plywood holding the shingles also help insulate the living area of the house.
Best way and easy cheap way is just roll out unpapered fiberglass over top of joist at right angles to existing insulation
No blowing in some insulation will help but putting insulation against the roof wont help. the attic area is supposed to breath to avoid condensation and overheating. The only thing you would put on the roof side would be to help cooling in summer since the shingles heat up the wood underneath and heats the attic, which then works down through the ceiling.
