Vented vs. non-vented attic
I live in zone 2A. I am building a raised home for myself. It has a galvalume roof laid on top 2x4 strapping which is over 3/8-inch sheathing with a radiant barrier underneath.
It is an equal span gable, 8/12, with living upstairs. A ridge vent sits on top of the roof.
I was planning to insulate the roof with foam inside the knee walls up until the ceiling levels out at 9 vertical feet. I figured on the 2" airspace.
I want to use open cell foam with damp spray cellulose. Is this a good system for Louisiana north of Lake Pontchartrain?
Posted Jul 28, 2011 11:48 AM ET
Edited Jul 28, 2011 1:14 PM ET
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