I want to insulate the wooden beam ceiling (cold floor) in my new build, between the upper floor and the attic.
First, I would install a vapor barrier from below in the living space and fix it to the wall using metal C-channels. (This step, of course, after plastering.) The joints should be properly sealed. Then, I plan to cover the ceiling from below with drywall, attaching it using direct hangers.
Now for my main question: I want to add insulation from above (from the attic side). The rafter spacing is about 660mm (26 inches), and the beam height is 200mm (8 inches). Which insulation would you recommend? Rockwool compression fleece with a thermal conductivity of 0.035 W/mK (WLG 035) at 200mm (8 inches) thickness, or something else? I’m reluctant to use blown-in insulation, though I’m not sure why—maybe I’m not familiar enough with the technique.
After that, should I simply install an OSB board on top, or is it better to put something between the insulation and the OSB?
First, I would install a vapor barrier from below in the living space and fix it to the wall using metal C-channels. (This step, of course, after plastering.) The joints should be properly sealed. Then, I plan to cover the ceiling from below with drywall, attaching it using direct hangers.
Now for my main question: I want to add insulation from above (from the attic side). The rafter spacing is about 660mm (26 inches), and the beam height is 200mm (8 inches). Which insulation would you recommend? Rockwool compression fleece with a thermal conductivity of 0.035 W/mK (WLG 035) at 200mm (8 inches) thickness, or something else? I’m reluctant to use blown-in insulation, though I’m not sure why—maybe I’m not familiar enough with the technique.
After that, should I simply install an OSB board on top, or is it better to put something between the insulation and the OSB?
mirk909 schrieb:
Are here only slackers at work ...
Big mouths talking nonsense. Just keep quiet and pull together ... then it will work out.
But anyway....let’s leave it at thatAt that tone, of course no one wants to anymore... even if they could
B
Bauexperte3 Jun 2013 20:12Hello,
I would recommend you think carefully about your words before your next post; I do not find this kind of behavior funny at all!
The users you call "slackers"—whatever that is supposed to mean, certainly not a polite term—are, in one case, an MEP planner and, in the other, a certified architect. So, the “big mouth spouting nonsense” you see is reflected on your own screen.
Regards, Bauexperte
mirk909 schrieb:
Are only slackers working here ...
Big mouth and writing nonsense. Just keep quiet and pull together ... then it will work out.
But anyway ... let's leave it at that
I would recommend you think carefully about your words before your next post; I do not find this kind of behavior funny at all!
The users you call "slackers"—whatever that is supposed to mean, certainly not a polite term—are, in one case, an MEP planner and, in the other, a certified architect. So, the “big mouth spouting nonsense” you see is reflected on your own screen.
Regards, Bauexperte
Hello, I have a question regarding a wooden beam ceiling and the use of a vapor barrier.
I have a new wooden beam ceiling with the following structure:
Upper floor living area
- Cement screed
- Screed membrane
- Impact sound insulation boards
- PE foil
- OSB board 25mm (1 inch)
Then the wooden beams.
Ground floor living area
- 180mm (7 inches) mineral wool insulation between the joists
- Fermacell boards 10mm (0.4 inches)
Now my question: do I need a vapor barrier above the Fermacell boards?
I would appreciate any answers.
Thanks, regards Nils
I have a new wooden beam ceiling with the following structure:
Upper floor living area
- Cement screed
- Screed membrane
- Impact sound insulation boards
- PE foil
- OSB board 25mm (1 inch)
Then the wooden beams.
Ground floor living area
- 180mm (7 inches) mineral wool insulation between the joists
- Fermacell boards 10mm (0.4 inches)
Now my question: do I need a vapor barrier above the Fermacell boards?
I would appreciate any answers.
Thanks, regards Nils
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