Unvented attic with open cell SPF needing exhaust fans installed on roof

Hi all,New to GBA but have read many many threads and posts on spray foam and now am trying to tease out if the foam makers suggester for my homes… Hi all,New to GBA but have read many many threads and posts on spray foam and now am trying to tease out if the foam makers suggester for my homes…Read MoreGreenBuildingAdvisor