Hello
I am currently renovating my house. Two rooms upstairs need to be fixed. The upstairs "floor joist system" is made of wood. There are noggings between all the supporting beams, on which chipboards are laid, and I have self-leveled the floors to make them flat. In one of the rooms, I used a 5 mm foam from Bauhaus and laid parquet on top. The impact sound to the rooms below became loud. What can I do now to reduce the impact sound in the other room? Does anyone have any good suggestions?
I am currently renovating my house. Two rooms upstairs need to be fixed. The upstairs "floor joist system" is made of wood. There are noggings between all the supporting beams, on which chipboards are laid, and I have self-leveled the floors to make them flat. In one of the rooms, I used a 5 mm foam from Bauhaus and laid parquet on top. The impact sound to the rooms below became loud. What can I do now to reduce the impact sound in the other room? Does anyone have any good suggestions?
The only thing I can think of is to change the insulation between the floors. There is special insulation that dampens sound much more than regular insulation. Otherwise, it's probably double layers of foam. Also, buy a thicker laminate. Preferably real 12 mm parquet.
I would probably have glued another layer of chipboard to the floor. It adds quite a bit. But at the same time, it also strengthens the floor.
I filled the entire intermediate floor with rock wool in a new house. It should be heavy material, it takes most of the disturbing noise so it becomes more of a dull sound instead of a clear sound. The footstep sounds are completely okay. Mostly thuds. However, I ended up with squeaks instead due to poorly installed floor chipboards by previous builders (took over a half-finished house).
You increase the weight with floor gypsum. I've considered a layer of foam plastic (Jackopor S80) that adds 1 cm and on top of that floor gypsum. I thought the foam plastic wouldn't transmit the sound further and the gypsum would provide the weight, or is it better with two layers of floor gypsum?FG said:
I laid xps 5mm from bauhaus in our upper hall/living room and am very pleased with the result, I think it dampens very well.. Although I have 34mm tongue and groove + 3mm masonite under the foam.
https://www.bauhaus.se/xps-dampningsplatta-5mm.html
https://www.bauhaus.se/xps-dampningsplatta-5mm.html
Tool enthusiast
· Stockholm
· 1 399 posts
As FG writes, the constructions need to be decoupled from each other. This is done with purpose-designed sylomer strips placed between the floor joists and the decoupled floor construction. Stepisol can also be used.
The floor is then constructed with materials like ceminwood or multiple layers of floor gypsum with damping glue in between. The sheet material must not be screwed and should be released around the wall.
The floor is then constructed with materials like ceminwood or multiple layers of floor gypsum with damping glue in between. The sheet material must not be screwed and should be released around the wall.
That sounds like wise advice. Now the floor is already self-leveled, so one can try with stepisol on the floor and up on the sides as well as floor gypsum glued (not screwed). Tried to Google stepisol but where can one buy it? Doesn't seem to be a common item.
Tool enthusiast
· Stockholm
· 1 399 posts
Contact Stepisol directly in Järfälla.
It's tricky to get it right when the chipboard is already in place, partly due to the construction height.
With Stepisol, the floor tends to be a bit spongy. If you're going to have chipboard -> Stepisol -> gypsum board/wood floor, the part lying over the Stepisol mat should have high weight, otherwise, you'll get a high drum sound and sponginess. Therefore, it would be good to have 2-3 layers of gypsum on the Stepisol mat, but that would create too much construction height, I suppose.
An alternative is to lay 2-3 layers of gypsum board and a thin impact sound-insulating mat like decibeX 2400PRO or Aprobo. However, these don't have much effect on wooden joists.
http://www.aprobo.com/sv/decibel/decibel-2
Björn might have some thoughts on what would give the best result?
With Stepisol, the floor tends to be a bit spongy. If you're going to have chipboard -> Stepisol -> gypsum board/wood floor, the part lying over the Stepisol mat should have high weight, otherwise, you'll get a high drum sound and sponginess. Therefore, it would be good to have 2-3 layers of gypsum on the Stepisol mat, but that would create too much construction height, I suppose.
An alternative is to lay 2-3 layers of gypsum board and a thin impact sound-insulating mat like decibeX 2400PRO or Aprobo. However, these don't have much effect on wooden joists.
http://www.aprobo.com/sv/decibel/decibel-2
Björn might have some thoughts on what would give the best result?
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I have considered all the posts and now have a new proposal, probably remove 5 foam plastic from a fire safety perspective,
Barelink underlayment board 3 mm, 2 layers of floating floor gypsum (13+13mm), underlayment board again (3 mm), Parquet (14 mm) = 46 mm which is OK to raise the floor with (even 50 mm) is OK
Tool enthusiast
· Stockholm
· 1 399 posts
For best effect, Sylomer strips are placed between the top of the floor joists and the heavy floating floor. The principle is based on a floor as heavy as possible being mechanically decoupled from the existing floor joist. The mass lowers the resonance frequency in the floating floor, which is desirable in this case.
Since the floor particle board and floating are already done, I suggest you lay Stepisol (in the thickness that the final construction height allows) on the leveled floor particle board. Then Ceminwood or two layers of glued floor gypsum.
Since the floor particle board and floating are already done, I suggest you lay Stepisol (in the thickness that the final construction height allows) on the leveled floor particle board. Then Ceminwood or two layers of glued floor gypsum.