[Greenbuilding] roof venting

Sat Jan 21 12:02:05 CST 2017

I am building a 750 sqft building with two single plane (shed) roofs, using 12" I joists @ 3/12 pitch. 
Can we just stuff that 12" with Roxul, or is ventilation needed?
Clarke Olsen
clarkeolsendesign.com
373 route 203
Spencertown, NY 12165 
USA
518-392-4640
colsen at taconic.net

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