Plywood attached to rafters to vent the soffit.

I'm looking to add insulation to my attic. It most places the insulation is only about 6 inches deep. There are soffit vents but now baffles. With the small amount of insulation blocking the vents is not an issue, but I want to add some before I add the insulation. I saw at the big boxes they have the baffles for around $2 per. In the attic is an abundance of 1/4 ply 2x8. My question is: Instead of using the baffles can I attach the plywood to the underside of the rafters. I counted about 70 gaps so $140 just for the baffles vs. using free plywood.
Reply to
Anonymous
1/4" plywood will be just fine and pull the existing insulation back from the new baffles, which need to go tight down to the soffit level. This, will stop the existing drafts from ever getting into or under the insulation again. If there's enough plywood, run the baffles to a couple of feet beyond the insulation height to create as much dead-air in the insulation as possible.
Reply to
Anonymous

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