所以我正在对我的啤酒酒吧进行大翻修，并将打开一个拱形天花板。这是一栋老旧的路屋风格的建筑，我认为它曾经是一个住宅，有很多扩建，但在过去的80-100年里做得很差。现在它是一个大型餐厅/啤酒厂。这是在纽约卡茨基尔地区，刚刚进入第六区。我每次都在翻新部分现在是整栋建筑的前部我需要在那里把天花板拱顶起来。它是关于50×23与传统框架单山墙屋顶2×6椽子24oc。更复杂的是，在原来的屋顶上增加了一个更大的屋顶。他们在山墙的一边建造了椽架然后在山墙的另一边建造了一系列椽架这些椽架都有檩条，一直延伸到后面的附加部分。所以我留下的是这个更小的山墙框架在这个新系统的阁楼里。一个山墙是(新)屋顶外部的一部分，另一个山墙在阁楼。 I cannot figure out how to best insulate this vaulted ceiling. Initially I was going to install baffles and build down the rafters to fit R30C fiberglass and then a continuous layer of foil faced polyiso on the interior. But the ridge of these gables would just vent into the attic, not outside. Or I can skip batt insulation and just install staggered layers of rigid foam on the inside? I have a few sources for reclaimed foam. There will be no lighting or mechanicals in the bays so I can be done pretty airtight. Spray foam is really out due to cost. I am not looking for the absolute best insulation value in the world as anything is better than what has essentially been zero in this building. I just don’t want to cause any problems. I’ve attached a crude pdf to better illustrate the construction. Thanks so much for any direction.