OK, I’m confused. What are the channels?
Are they the Styrofoam baffles, that allow air to move from the soffits to the ridge?
Then the insulation goes on top, between the rafters.
At a minimum, you’re going to want to do something at the soffits, to allow air to flow
You can buy a M12 Milwaukee battery on Amazon for $28 or four knockoffs for $40. I have two and they work just as well as the originals.
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