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ProperVents + cellulose?

mrbreadpuddin | Posted in Green Building Techniques on

Can dense-pack cellulose crush ProperVents?

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  1. Riversong | | #1

    Yes. They are the most nearly useless vent baffles on the market. A good baffle must fill the entire space between rafters, maintain at least 1" clear space, and be rigid enough to not crush or deflect under pressure.

    I prefer making my own by nailing spacer strips to both sides of each rafter tight to the sheathing, and installing strips of 3/8" plywood or 1/4" MDF to fill the rafter bays.

  2. Expert Member
    Michael Maines | | #2

    These are better than the foam version: http://www.buildingforhealth.com/proddetail.php?prod=ADO-PV#LongDisc.

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