Are attic baffles (store-bought) designed only for houses with ridge vents?
Looking to install some ADO Duravent baffles, being 11in wide, for 16in OC rafters (no time to build my own) before using Comfortbatt Rock wool double layers of R-30 in the attic.
It is and will remain an unconditioned attic, has two large Gable end vents, but needs more Soffit vents installed. (Not intending to cut in a ridge vent.) My main goal with the Baffles is mainly to block the Batts from being crammed into the Soffit inadvertantly. Also of course, hoping to promote air flow to the underside of roof plank decking.
Q1: Will the install of these Baffles serve an advantageous purpose despite the lack of ridge vent?
Q2: If so, Shall i install them as is, flat up against the roof decking with staples, just past the Top plate by a couple inches as advised by ADO install instuctions?
Q3: If not, would it be better to cut a hinge into the baffle at 7in up from the bottom of the 4 foot long baffle and install/staple that to the Top plate to block that space? ( as shown on YouTube by Mr Hardware)
Q4: And if yes to the Q3 scenario, would you advise for me to tape the perimster of that hinge i cut, sith a SIGA or Tyvek tzpe to make it air tight ( as these Baffles can have “windblocker” seals used with them but i dont have them locally, nor do they sound like they are appropriate to be used with old school rafters, as opposed to modern truss systems.
Q5: Is that air tight sealing at baffle edge necessary?
Thx for any pointers
GBA Detail Library
A collection of one thousand construction details organized by climate and house part