On Tue, 27 Aug 2013 08:02:29 -0700 (PDT), wrote:

been looking to add some insulation and install soffit vent channel in the attic.

does the channel has to be installed in ** all ** the void between the rafters or just a few around where the vents are?

thanks
richard

Just at the vents along the soffit. I see no need for a baffle in
each cavity?