ᐅ Renovating Beam Ceilings and Floors – Challenges and Questions
Created on: 16 Mar 2018 17:43
B
Berti_90
Hello everyone,
I’m new here, but I’ve owned my own home (an older building) for 6 years already. A little bit about me...
I’m Sven, 28 years old, and I’m looking for help because I’m a bit stuck.
I’m facing the problem that in my older house, the intermediate ceiling consists of wooden beams. From below, these are covered with drywall panels and a wooden understructure. Above the beams (which are 180mm (7 inches) deep), there is about 60mm (2.4 inches) of glass wool insulation, then cardboard, and finally a layer of wooden boards (see pictures).
When walking or moving normally on the upper floor, the noise is extremely loud below (like a hollow box or megaphone effect?).
Currently, the entire floor (13m x 6m (43ft x 20ft)) is not in use, but it is planned to become living space in the near future.
My idea is to remove the entire wooden board layer, fill the hollow space (no glass wool!), and then install a proper floor using Fermacell leveling panels. Above that, I plan to lay a vapor barrier, then an impact sound insulation layer made of compressed wood fibers, and finally OSB boards for a clean finish. On top of that, a solid wood floor could be installed.
Good idea? Any other opinions or suggestions?
Best regards,
Sven
I’m new here, but I’ve owned my own home (an older building) for 6 years already. A little bit about me...
I’m Sven, 28 years old, and I’m looking for help because I’m a bit stuck.
I’m facing the problem that in my older house, the intermediate ceiling consists of wooden beams. From below, these are covered with drywall panels and a wooden understructure. Above the beams (which are 180mm (7 inches) deep), there is about 60mm (2.4 inches) of glass wool insulation, then cardboard, and finally a layer of wooden boards (see pictures).
When walking or moving normally on the upper floor, the noise is extremely loud below (like a hollow box or megaphone effect?).
Currently, the entire floor (13m x 6m (43ft x 20ft)) is not in use, but it is planned to become living space in the near future.
My idea is to remove the entire wooden board layer, fill the hollow space (no glass wool!), and then install a proper floor using Fermacell leveling panels. Above that, I plan to lay a vapor barrier, then an impact sound insulation layer made of compressed wood fibers, and finally OSB boards for a clean finish. On top of that, a solid wood floor could be installed.
Good idea? Any other opinions or suggestions?
Best regards,
Sven
MayrCh schrieb:
That won’t solve your impact sound problem, though. Weight is key. Yes and no. As the OP describes it, the disturbing noise doesn’t primarily come from vibration but from resonance. In that respect, the idea of soundproofing here is not entirely wrong.
However, in general, I agree with the approach of addressing this issue above the joist level. This would also provide an opportunity to use the joists purely as a design feature for the ceiling underside.
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11ant schrieb:
Yes and no. As the original poster describes it, the disturbing noise here does not primarily come from vibration but from resonance. In this respect, the idea of soundproofing is not incorrect. Impact noise is always caused by vibration excitation. The main transmission path here is through the beam, not the air path through the cavity; in some cases, flank transmission may play a larger role than the transmission path through the cavity. Impact noise rattling occurs at around 100 Hz and below. Cavity damping with glass wool or rock wool simply does not help in these frequency ranges.
MayrCh schrieb:
Impact noise always originates from vibrational excitation. And with the guitar, the plucked string is the initial source, although the resonating body is still very important.
MayrCh schrieb:
Impact noise booming occurs around 100 Hz and below. Cavity damping with glass or rock wool simply has no effect in these frequency ranges. Bass reflex speakers may be out of fashion, but damping does have an effect there.
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