Hi, not sure if I'm posting this in the right thread.

I'm in the process of building a house and wanted to ask about how to handle plastic sheeting/vapor barriers here as the construction looks like this.

The house consists of 2 floors, so it will be heated above the intermediate floor as well. So I assume it should not be covered in plastic on the ceiling of the intermediate floor, only the exterior walls (correct me if I'm wrong).

But then the exterior wall where the intermediate floor rests on the beam. What's the best way to handle that?
 
  • Wooden frame structure of a house under construction, showing exposed beams and studs with blue sections representing potential window areas.
Search "Hur gör snickaren" on YouTube, I think they're very good films. It may not fully answer your question, but a very good resource for amateurs building houses (which isn't actually that complicated).

Another good source is Svenskt Trä, which has complete drawings for many constructions, including a complete additional building of the type previously referred to as "Attefallare".
 
jonmo jonmo said:
Search "Hur gör snickaren" on Youtube, very good videos I think. It might not fully answer your question, but a very good resource for amateurs building houses (which is not really that complicated).

Another good source is Svenskt Trä, which has complete drawings of many constructions including a complete accessory building of the type that was previously called "Attefallare".
I have looked at that, but I seem to remember they make a single-story with a cold attic above, so they plastic the ceiling. But I might remember wrong, so I shall check again to see.
 
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jonmo
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If the construction is to look like you are showing, you need to put a layer of vapor barrier before you install the beam for the intermediate floor. But how do you plan to build up the wall on the first floor when the beam lies outside the wall studs?
 
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curtsson and 1 other
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The easiest way is to place nogging between the floor joists either in line with the wall or slightly outside, to which you staple and tape the plastic.
 
Matti_75 Matti_75 said:
The easiest way is to place noggins between the floor joists either in the wall line or slightly outside, which you staple and tape the plastic against.
Yes, if I had been thinking clearly before I installed the 45 on the wall and placed the intermediate floor, I would have placed the plastic inside the 45, but I completely forgot about this.

So the question is how to do it most easily to make it airtight.

But you mean noggins right in the 90-degree bend, so you get something to attach in the corner, between the floor/wall?
 
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DennisN
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Just pass the plastic by and place the kortling in line with the beam and wrap it in plastic as well. Then fold the plastic towards the standing beams on level 2.
 
N Nygge72 said:
Hello, I don’t know if I’m posting this in the right thread.

I’m in the process of building a house and wanted to understand how to think about plastic sheeting/vapor barriers given that the construction looks like this.

The house consists of 2 floors, so it will be heated above the intermediate floor as well. So I assume it shouldn’t be plastic sheeted on the ceiling of the intermediate floor, only the outer walls (correct me if I’m wrong).

But then the outer wall where the floor rests on the beam. What's the best way to do it there?
Plastic sheet a bit where the floor comes and then plastic sheet the rest and tape the seam, otherwise it will be a mess to make it airtight.
 
BadrumFactory BadrumFactory said:
Plastic a section where the joists come and then plastic the rest and tape the seam, otherwise it will be a tough job to make it tight
Pretty convinced that I'll get a tough job since I forgot to "ease" the plasticing before I set the joists unfortunately 🫣
 
N Nygge72 said:
Pretty convinced I'm in for a crappy job, as I forgot to "ease" the plastic ring before I set the joists unfortunately 🫣
Then you might have to tape each joist in the intermediate floor 🙂 quite a new solution to install intermediate floors but usually with FKS construction.
 
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Festlund
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BadrumFactory BadrumFactory said:
Then maybe you have to tape each beam in the intermediate floor 🙂 quite a new solution to install the intermediate floor but usually with FKS construction.
Lucky there aren't that many then 🤣🤣
 
N Nygge72 said:
Lucky there aren't that many then 🤣🤣
It will be fine, keep it up 👍
 
BadrumFactory BadrumFactory said:
It will be fine, keep going 👍
But you plastic the outer wall, then the plastic should go out a bit on the joist 5/10cm and be taped so that it's tight between the joist and the plastic (and between wall and floor structure). But the rest of the floor structure is left unplasticized. Am I thinking correctly then?
 
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