1951年建造的一个房间的屋顶将被密封，绝缘和重新落下（北部区域5A，差不多6）。三面斜坡约三英尺，直到斜坡符合构成大部分屋顶的平坦部分（阁楼横截面.jpg）天花板是膏药，穿透将密封，聚裂板之间的关节在周边附近使用compensate for the lower height will be staggered and sealed, air baffles allowing 2 – 3″ of air flow beneath the slopes will be installed, we’ll leave 2 – 4″ of space under the flat roof for ventilation but the rest (about 24″ under the ventilation space under the flat part + whatever will fit over the polyiso) will be filled with cellulose (Proposed R Profile & Materials.jpg). The flat part of the roof will be re-built at a very slight angle so water doesn’t pool and Ice & Water Shield will be installed. I’m aiming for a pseudo Passive House structure that is durable.

空气密封对于冰镇坝预防和一般效率非常重要，但我读到了超紧的旧房屋不可能。Fine Home Building published an article (by Mr. Holladay) saying “When blown-in insulation is installed in a closed framing cavity, it’s possible to achieve higher insulation densities than can be achieved on an attic floor… In a closed cavity, cellulose should be installed by the dense-pack method—that is, to a density of at least 3-1/2 lb. per cu. ft.” Dense pack provides a partial air barrier too.

但是这个简短的阁楼”(29身高max),也许认为这是有意义的一个封闭的腔,并使用密集的包装上面纤维素和polyiso——包装的内部空气挡板,留下2 - 4”在平屋顶的通风空间。这将增加一些R，并将赋予部分空气屏障的致密纤维素的房子，需要它所能得到的一切帮助。

一般来说，在使用高密度填充的纤维素时，“纤维素”在“建议的R Profile & Materials.jpg”中看到的水分、绝缘值、对流等方面是否存在问题??

如果来自那些角度的声音，也许有结构考虑因素。I don’t want any chance of plaster between joists sagging, bowing, etc. I can’t see if nails or screws hold the board to the framing but do know the boards are 16″ wide (can’t tell know how long). Assuming the weakest scenario – nails instead of screws and boards of unknown strength, is it obvious the plaster ceiling can hold 7.6 lbs per square foot (2 cubic feet high x 3.8 lbs cellulose/cu. ft. = 7.6 lbs over each sq. ft, assuming an overshoot on density to be safe) without bowing??? Or is this a question someone like an inspector or engineer should see in person???

如果一个密集的封闭式短阁楼是一个好主意，它是技术上可行的 - 在椽子上附着胰岛素，然后填入下面的大面积???其他密集包装这个空间的方法？

提前谢谢你。