Ole_l
2017-01-23 13:48:17
- #1
Hello everyone,
we are currently planning the partial conversion of the attic of our new building as a DIY project. One half is to be converted into an office, the other half will remain a storage room, with a small hallway in between, where the space-saving staircase from the upper floor arrives.
The existing floor structure of the attic from bottom to top is: non-woven wallpaper, drywall, roof battens, vapor barrier foil, roof beams, 240mm insulation (Climowool KF2) in between, nailed tongue and groove boards.
The office and hallway are now to be built on top of the tongue and groove boards. The covering should be click vinyl. The question now is which substructure makes sense. From my point of view, impact sound insulation is especially important here, since thermal insulation is already sufficiently provided by the 240mm insulation and the roof is also fully lined with 240mm insulation. All rooms are also heated.
My site manager’s recommendation is now to cover the tongue and groove boards with Fermacell dry screed panels. His structural engineer believes that the impact sound insulating effect of the screed is not worth the money and that the vinyl can be laid directly on the tongue and groove boards. A compromise, according to my research, could also be OSB boards (possibly two layers laid crosswise).
What would you advise me given the existing construction and the planned use of the room (rather little movement - not a children's room or similar)?
If OSB is sufficient, how should it then be installed? Directly one or two layers on the tongue and groove boards or with additional impact sound insulation in the form of whatever? What thickness should the OSB boards then have?
I also wonder whether, with the existing construction, another vapor barrier should be laid on the tongue and groove boards?
Best regards Ole_l
we are currently planning the partial conversion of the attic of our new building as a DIY project. One half is to be converted into an office, the other half will remain a storage room, with a small hallway in between, where the space-saving staircase from the upper floor arrives.
The existing floor structure of the attic from bottom to top is: non-woven wallpaper, drywall, roof battens, vapor barrier foil, roof beams, 240mm insulation (Climowool KF2) in between, nailed tongue and groove boards.
The office and hallway are now to be built on top of the tongue and groove boards. The covering should be click vinyl. The question now is which substructure makes sense. From my point of view, impact sound insulation is especially important here, since thermal insulation is already sufficiently provided by the 240mm insulation and the roof is also fully lined with 240mm insulation. All rooms are also heated.
My site manager’s recommendation is now to cover the tongue and groove boards with Fermacell dry screed panels. His structural engineer believes that the impact sound insulating effect of the screed is not worth the money and that the vinyl can be laid directly on the tongue and groove boards. A compromise, according to my research, could also be OSB boards (possibly two layers laid crosswise).
What would you advise me given the existing construction and the planned use of the room (rather little movement - not a children's room or similar)?
If OSB is sufficient, how should it then be installed? Directly one or two layers on the tongue and groove boards or with additional impact sound insulation in the form of whatever? What thickness should the OSB boards then have?
I also wonder whether, with the existing construction, another vapor barrier should be laid on the tongue and groove boards?
Best regards Ole_l