Radiant barrier for garage
Hi , I am building a new home Phoenix AZ , main house will be SIP’s , my 3 bay garage will be on the S/W cnr and will be traditional stud , radiant barrier osb external and then drywall internal , I will have low level vents around perimeter of garage and then ridge vents ( 6ft of available ridge ) I will be leaving a permanent opening thru garage ceiling to access the storage area above thus allowing free flow of hot air to ridge , the walls/roof will be treated same as walls
my questions are , will the natural flow of air caused by heat rising be enough to keep garage to same outside air or should I introduce mechanical assistance , also will I need to create a path for hot air between osb and drywall up through wall plate and along roof void .
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