Vent or Not Vent
I was recently struggling with this question for the house we are building and found this article particularly helpful. I had decided to go with a non-vented roof assembly until I started to compare the costs. I then ran into the standard trade-offs that I’m sure most people find. I finally settled on using a vented roof assembly with batt insulation from below on my scissor trusses (gable and hip). I only have a couple of ducts that will be in the attic space and will use rigid duct. I am planning to have use spray foam at the truss blocking and will spray foam the ducts too prior to covering them in insulation as the the batts go in. I like the approach of using more standard building approach, but focusing on executing the details well to limit the typical weaknesses. I don’t think I would have gotten there without this article from Joseph Lstiburek. Thought this might be helpful for others.
If anyone has experience doing what I am planning, please share your thoughts.
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