Sill paper between sill and floor joists?

[hahalj]

I've seen that people handle sill paper differently, of course, it should lie between the concrete foundation or, in my case, the concrete blocks and the sill. But I've seen some also place sill paper on top of the sill and under the edge beams in the floor structure. This way, sill paper is on both the underside and topside of the sill.

Is this normal? Are there advantages or disadvantages to doing so? The function of the sill paper is to moisture-proof against the underlying structure, but does one assume that the sill wood will still become so moist that you want to protect the floor structure even more with an extra layer of sill paper?

 

[hahalj]

No one has any thoughts on this? How have you done it yourself?

 

[Mikael_L]

I can't see at all what the finesse with syllpapp there would be ...?

edit:
If the sill becomes too damp, despite syllpapp under it, then there's something else really wrong.

 

[hahalj]

Nah, me neither, that's why I'm asking. I know I've seen it while browsing around, but I can't find where it was anymore. Just thought I might have missed something.

 

[buspojken]

Sounds odd, have neither heard, seen, nor done it myself, can't see the point in it either.

 

[Jonatan Aasa]

sounds like someone thought that the syllpapp is there as a windbreak, if they haven't used it as a height adjustment.

 

[maskus]

Some argue that you can counteract "knarr" in this way... as usual, I have no idea

 

[prototypen]

I would also guess antiknarr.

Protte

 

[xyle]

There is a lot of pressure on the sill, so it's hardly likely to creak, right? Plus, it's so far under the finished floor that no one will ever hear it. Use paper under the sill, it'll be great!