Building a room within a room – impact noise – solutions?
Posted: Sun Dec 27, 2020 5:17 am
Hello! I have an impact noise attenuation question.
If I build a room within a room on a floating floor using a Mason spring jack type system, will this make low frequency impact noise coming from an upstairs neighbor practically inaudible at night (assuming it’s done properly)? I live in a high-rise (an upper floor) cast concrete apartment building with 8-inch(20cm) slabs and I am concerned about noise coming from dragging the furniture on tiles and laminate floor at night coming from an inconsiderate neighbor (I don’t have access to the noise source to treat it there).
It’s our bedroom where we sleep, 170 sq.ft (16 sq.m), square room with a 11ft ceiling (3.30m). The perimeter walls are built from 4in (10cm) concrete blocks. I plan to build internal walls from brick (for greater mass) resting on a Mason jacked up internal floor, the internal ceiling will be half as thick as the building slab (shall do 4in (10cm) max) resting on internal brick walls (no contact with outer walls) and will use rockwool (the type that won't saddle) to fill the 2in (5cm) cavity in between the walls and also between the ceiling and the outer slab (there I can do a 4in (10cm) gap or more if need be). Don't plan to use plaster boards. As mentioned, the floor will be Mason jack up type raised from the floor slab (leaving about 1in (2.5cm) cavity, not filled). I also plan to put a pair of insulated room entrance doors and double windows as well, mounted on silicone, no foam.
So, if I build a “room within a room” on a floating floor (completely decoupled on springs), even IF some noise still passes through, will it be perceived as airborne noise rather than structural noise if completely decoupled?
I can sleep through street noise, police sirens etc, no problem, but impact noise is a killer, you can hear it in your ear through a pillow boom, boom... (I think dominant frequencies are 30-50 hz and below). Hence, I am looking for complete de-coupling solutions.
My neighbors stay up all night every night and I have no other choice (other than selling) unless I can attenuate this noise somehow, or at least convert it to airborne noise.
Worth trying?
Thanks!
If I build a room within a room on a floating floor using a Mason spring jack type system, will this make low frequency impact noise coming from an upstairs neighbor practically inaudible at night (assuming it’s done properly)? I live in a high-rise (an upper floor) cast concrete apartment building with 8-inch(20cm) slabs and I am concerned about noise coming from dragging the furniture on tiles and laminate floor at night coming from an inconsiderate neighbor (I don’t have access to the noise source to treat it there).
It’s our bedroom where we sleep, 170 sq.ft (16 sq.m), square room with a 11ft ceiling (3.30m). The perimeter walls are built from 4in (10cm) concrete blocks. I plan to build internal walls from brick (for greater mass) resting on a Mason jacked up internal floor, the internal ceiling will be half as thick as the building slab (shall do 4in (10cm) max) resting on internal brick walls (no contact with outer walls) and will use rockwool (the type that won't saddle) to fill the 2in (5cm) cavity in between the walls and also between the ceiling and the outer slab (there I can do a 4in (10cm) gap or more if need be). Don't plan to use plaster boards. As mentioned, the floor will be Mason jack up type raised from the floor slab (leaving about 1in (2.5cm) cavity, not filled). I also plan to put a pair of insulated room entrance doors and double windows as well, mounted on silicone, no foam.
So, if I build a “room within a room” on a floating floor (completely decoupled on springs), even IF some noise still passes through, will it be perceived as airborne noise rather than structural noise if completely decoupled?
I can sleep through street noise, police sirens etc, no problem, but impact noise is a killer, you can hear it in your ear through a pillow boom, boom... (I think dominant frequencies are 30-50 hz and below). Hence, I am looking for complete de-coupling solutions.
My neighbors stay up all night every night and I have no other choice (other than selling) unless I can attenuate this noise somehow, or at least convert it to airborne noise.
Worth trying?
Thanks!