Floor construction without screed directly on basement ceiling

  • Erstellt am 2021-02-04 10:08:29

pagoni2020

2021-02-05 11:20:11
  • #1
We will execute such a floor construction. Depending on how much insulation you need on the floor (possibly specified by the energy consultant depending on the desired goal), this is possible. Apparently, you have a basement underneath, so you could even do without a vapor barrier, but it would probably be safer to lay such a foil. There are systems, for example from Steico and others, called SteicoFloor, where the joist layer is not screwed down but laid almost floating and decoupled because the fiber insulation boards rest on the floor, but the wood beams are a few millimeters above. You can then lay anything on top, such as screwing down floorboards, which is what we will do. If you want or have to install different insulation, I was recommended, in my opinion, a sensible method, namely to lay a layer of Styrofoam immediately after the vapor barrier, as it compensates well for small stones or cement residues. Then lay the joist layer floating on top, i.e., a squared timber with insulation boards in between. Due to the KfW standard, we need a certain insulation class there, so we will probably execute it that way. Instead of Styrofoam, you can just as well use fiberboards. It also depends on the desired insulation result. But you can also screw the joists directly to the floor; however, you should make sure that they are screwed down firmly permanently, as otherwise they might creak individually over the years. You can also decouple the joists with a layer of felt or similar in this case. I had it like this in the old house, and it worked well. Now we will probably do the floating solution as described above. We will also not have a screed; the discussion about that is pointless; for a floorboard floor, you certainly don’t need one and it is rather a hindrance.
 

Similar topics
14.06.2011New building: Which insulation is appropriate?14
10.07.2011Wall construction and insulation for Kfw 70 house, okay?19
28.10.201236 cm Ytong exterior wall, solid construction, mold formation, insulation37
21.08.2014Insulation on upper floor concrete ceiling / roof by own work - vapor barrier?10
21.10.2015What type of attic insulation is sensible?12
11.11.2016Floor construction with wooden substructure21
27.03.201724 cm Ytong + insulation or 36.5 cm Ytong63
02.12.2017Insulation of the top floor ceiling17
20.05.2018Dense, well-insulated wooden house without plastic? (Vapor barrier)21
06.02.2018The vapor barrier has a brownish position, insulation is wet27
31.10.2018Concern about vapor barrier - air from ceiling outlet12
13.04.2020Insulation in the construction trailer, vapor barrier yes/no?12
25.03.2020Insulation of the attic as living space15
27.02.2020Is the vapor barrier in the roof vapor-permeable? Yes? No!16
16.08.2020Insulation of the attic of an old country house14
03.03.2021Floating solid wood parquet flooring installation, any experiences?79
23.04.2021Insulation of the floor ceiling - house purchase12
24.03.2023Work on basement ceiling insulation with stone wool48
16.12.2022Forgot insulation on the dormer wall - mold on wood - what to do?13
27.02.2023Is a vapor barrier necessary under insulation on a floor slab?25

Oben