Venting a cathedral ceiling with 24" of cellulose
I am building a Passive House with a cathedral ceiling. I used parallel cord trusses with 27" between the top and bottom cords. I will put OSB on the bottom of the trusses as my air barrier and to hold the weight of 24" of loose fill cellulose insulation. I want to vent the roof, but the only baffles I've seen are made of thin vinyl, polystyrene or cardboard. I am afraid that they will be crushed by weight of the cellulose, which would eliminate the air channel. The roof pitch is 10:12 and is 20 feet long, so the baffles at the bottom will be under a lot of pressure.
Does anyone know of a stronger, more rigid vent baffle that could withstand such pressures?
Posted Thu, 05/15/2014 - 01:00
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