天花板上的开孔泡沫还是纤维素？
The ceiling has been dropped 1 foot, and sheet rocked, as well as painted-
1个素数和2层涂层。
Tek track lighting and a few cans (IC) have also been installed.
管道工作已进入并安装在1英尺掉落的天花板内。
My question is:
可以直接在管道上使用开放式大豆泡沫吗？
直接岩石？我的木匠关心泡沫的扩展
在板岩本身上，以及直接在安装的鸭子上喷洒。
I would save money and be able to use blown in cellulose to a depth
of rough;y 15″.
请就我们的最佳行动方案提供建议。
(we would box-in the cans before spraying)
thank you in advance
gs
GBA细节库
由气候和房屋部分组织的一千个建筑细节的集合
Search and download construction details
Replies
Where is this?
什么是1'下降？
Heat and or AC , Which dominates?
I have sprayed ducts with water blown open cell Icynene. I do not like the soy foams since reading that they have been more difficult for some to work with. My projects have been in new construction not homes that are lived in at the time. Never had a lingering odor once lived in like some have.
You can spray drywall.
As to cellulose most here prefer it as the most green priduct. Ducts that are buried in insulation may sweat and wet insulation if used for AC. Others say not a problem. There is a question about this here if you can find it with search.
Best bet, do the can covers, use standard duct insulation, then bury all in cellulose.
加里，
目前尚不清楚您的空气屏障在哪里。新的石膏板上的天花板是您的空气屏障吗？
Like AJ, I'm curious to know what you have above the 1-foot drop.
we're in Norfolk, Ct, 06058
这项工作将由经验丰富的专业人士进行
谁封闭了电池泡沫所有垂直墙，
to a depth of 6 inches. did a great job-
我们已经在成品中安装了辐射热
concrete floors, so the duct work is for AC only.
(we have heat ventilation recovery system, too)
thank you
the new dry wall ceiling is our new air barrier.
在掉落的天花板上方，空气屏障坐在管道和罐子上。
阁楼是无条件的空间，带有山脊，索菲特和山墙通风口
standing metal seam roof- with NO holes in it.
加里，I would let your guy do what he wants to do since he is there and you are happy so far. We are not there. Spray foam done right will work.
如果您的旧天花板是空气屏障，我建议在阁楼中安装纤维素绝缘材料，以便您将绝缘层与机械（管道和凹入罐）隔开（分开）。
However, if the new ceiling is your air barrier, my preferred method won't necessarily work. It all depends on whether the walls at the perimeter of the building (between the new ceiling and the old) are sealed against air leakage, and whether the old ceiling is airtight or leaky.
我们也k down the old ceiling, and dropped the new one.
we used metal studs for the new ceiling We also built a new interior
2X6 wall just inside the old wall cavity. this outer cavity was filled with closed cell soy foam sprayed,
and all wiring and plumbing is inside conditioned space. The sheet rock covering the wall cavities
and insulated closed cell space is air tight to the finished concrete floors and ceiling
Properly installed drywall will be fine. Closed cell 2", then cellulose would be bullet proof.
加里，this is just too complicated an assembly for us to give you an accurate answer. You can see it so you understand all the components; it's pretty hard to visualize exactly what you have. Are the walls connected to the ceiling space? How airtight is the ceiling plane?
I would disagree with AJ that 2" of closed cell in a roof or ceiling is a good idea with 15" of cellulose below it and a metal roof above it. I'm usually an advocate of hybrid insulation systems but red flags are going up on this one.
Michael, he says the new drop ceiling is airtight to wall. Then sprayfoam backside of new airtight ceiling. Then ABOVE AND ON the sprayfoam goes the cellulose.
你们不喜欢我们的人，是的。降低我的男人的危险信号，并抬高绿色。