For projects in Japan
Home theatre soundproofing and acoustics in Japan
Serious equipment in a room with no isolation plan. The complaint is almost never the speakers. It is bass leaving the room and an untreated box making the system sound worse than it is. Timber frame houses and reinforced concrete mansions, with thin partitions in older stock and tight urban spacing throughout.
- Containment
- Bass through the wall, floor and door. Mass and decoupling, with the door usually the weakest point.
- Low frequency inside
- Corner absorption with depth, before any surface treatment.
- Reflections
- Side wall and ceiling first reflection points at the seating position.
- Quote
- From a plan and a section, within 48 hours
01 / The material
What this is, and what it changes in a Japan room
Serious equipment in a room with no isolation plan. The complaint is almost never the speakers. It is bass leaving the room and an untreated box making the system sound worse than it is.
Timber frame houses and reinforced concrete mansions, with thin partitions in older stock and tight urban spacing throughout.
Work reaching us from Japan is mostly apartments and houses, offices, studios, hotels, schools, clinics.
- Small rooms, close neighbours Depth is genuinely scarce, so a thin build-up that performs is worth more than a thicker one that performs marginally better.
- Designed to move Seismic detailing means junctions that must stay flexible. An acoustic layer cannot bridge a movement joint rigidly.
- Precise expectations Specifications here are written carefully and checked properly. Send us the target and we will say plainly what our material reaches.
- Containment Bass through the wall, floor and door. Mass and decoupling, with the door usually the weakest point.
Full specification
Thickness, density, NRC by frequency, fire class, standard sizes and build-up detail for home theatre soundproofing are on the main product page. This page covers what that means for a project in Japan.
02 / The build-up
The stack, in the order it is installed
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Layer 1
Acoustic foam and BassBloc
Open cell foam shapes for high frequency control, and BassBloc, a high density absorber built for the low mid range where ordinary foam does nothing. In Japan, split units and VRF with outdoor units in very tight gaps between buildings.
Behind a fabric frame. Where the room has to look finished, absorber inside a frame rather than foam on show.
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Layer 2
Soundproofing materials
The blocking side of the range taken together: mass loaded vinyl, resilient layers, cavity absorption and the build-ups they belong in. In Japan, halls, temples and civic auditoria range from very controlled to very reverberant, and both need measured targets.
Independent leaf. A second wall that does not touch the first. Nothing else comes close for the money.
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Layer 3
Soundproof curtains
A layered curtain with a mass loaded vinyl core, used where an opening has to stay an opening. In Japan, school buildings are hard surfaced with long corridors, and gymnasiums double as assembly halls.
Full height with return. Curtain taken floor to soffit with a side return and an overlap, because the gap is what leaks, not the fabric.
We would rather argue about the build-up at design stage than on site. See how we support architects.
03 / On the ground
What decides the build-up in Japan
- Small rooms, close neighbours
Depth is genuinely scarce, so a thin build-up that performs is worth more than a thicker one that performs marginally better.
- Designed to move
Seismic detailing means junctions that must stay flexible. An acoustic layer cannot bridge a movement joint rigidly.
- Precise expectations
Specifications here are written carefully and checked properly. Send us the target and we will say plainly what our material reaches.
- Humid summers
PET felt does not hold moisture or feed mould, which matters through a humid season in a sealed room.
- The housing stock
Timber frame houses and reinforced concrete mansions, with thin partitions in older stock and tight urban spacing throughout.
04 / Room by room
What each space in a Japan project needs
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Containment
Bass through the wall, floor and door. Mass and decoupling, with the door usually the weakest point. Depth is genuinely scarce, so a thin build-up that performs is worth more than a thicker one that performs marginally better.
- Acoustic foam and BassBloc, 1800 x 900 mm
- Soundproof curtains, 10 to 12 mm
- Acoustic carpet and rugs, High density polyester
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Low frequency inside
Corner absorption with depth, before any surface treatment. Seismic detailing means junctions that must stay flexible. An acoustic layer cannot bridge a movement joint rigidly.
- Acoustic foam and BassBloc, 20 mm
- Soundproof curtains, 5.5 kg per sq m
- Acoustic carpet and rugs, Felt
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Reflections
Side wall and ceiling first reflection points at the seating position. Specifications here are written carefully and checked properly. Send us the target and we will say plainly what our material reaches.
- Acoustic foam and BassBloc, 100 kg per cubic metre
- Soundproof curtains, Up to 30 dB
- Acoustic carpet and rugs, 64 sq ft per pack
Interior designers tend to arrive with the look already decided. We will tell you which finish gets there without losing the acoustics. See how we work with interior designers.
04 / Climate
Why the climate in Japan changes the material, not the target
Japan is hot summers, mild winters and a distinct wet season, and that narrows the material list before acoustics is discussed.
PET felt handles the wet months without absorbing moisture or feeding mould. Timber and wood wool want a ventilated cavity and a stable indoor RH.
The failure we design against here is wet-season humidity behind linings.
Where a consultant is already engaged on a Japan project, we supply to their specification and send the test reports rather than describing them. More on working with acoustic consultants.
06 / Worth knowing
The six errors that cost the most
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Foam on the walls as a soundproofing measure
This is the one that comes back as a second fit-out rather than a snag.
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A standard door on a room built to hold bass
A 6 mm undercut under a door leaves a hole the size of a brick. The wall around it is then decorative.
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Treating before the room is sealed
A 6 mm undercut under a door leaves a hole the size of a brick. The wall around it is then decorative.
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Treating it as a generic Japan job
Depth is genuinely scarce, so a thin build-up that performs is worth more than a thicker one that performs marginally better.
05 / Getting it there
What the route into Japan actually looks like
| Ships from | Palwal, Haryana, India |
|---|---|
| Arrives at | Yokohama or Kobe, then road to site |
| Dispatch | 4 to 7 working days |
| Freight | Sea via Yokohama |
| Support | Drawings, build-ups, BOQ and material that arrives complete |
Standard items dispatch in 4 to 7 working days. The sea leg from India is long, so plan the full door to door window into the programme. We give real dates, not optimistic ones.
Sea freight into Yokohama or Kobe, then road to site. Air freight for samples and urgent quantities.
Questions from Japan projects
What makes home theatre soundproofing and acoustics different in Japan?
Timber frame houses and reinforced concrete mansions, with thin partitions in older stock and tight urban spacing throughout. Depth is genuinely scarce, so a thin build-up that performs is worth more than a thicker one that performs marginally better.
Where should the budget go first on a Japan project?
Containment. Bass through the wall, floor and door. Mass and decoupling, with the door usually the weakest point. Low frequency inside. Corner absorption with depth, before any surface treatment.
Do you have an office or installation team in Japan?
No. We manufacture in India and supply into Japan. We give you drawings, build-ups, a BOQ and material that arrives complete, and we will tell you plainly when a job needs a local contractor we cannot be.
How does material get to a Japan site?
ships from: Palwal, Haryana, India, arrives at: Yokohama or Kobe, then road to site, dispatch: 4 to 7 working days. Standard items dispatch in 4 to 7 working days. The sea leg from India is long, so plan the full door to door window into the programme. We give real dates, not optimistic ones.
What goes wrong most often on this kind of project?
Foam on the walls as a soundproofing measure. A standard door on a room built to hold bass.
What do you need from us to quote?
A plan, a section through the critical partition or ceiling, and what the room is for. From that we can give a build-up and a BOQ rather than a price per square foot.
Next step
Drawings in, BOQ and a delivered date out
Send what you have. We will give you a layer by layer build-up, a bill of quantities and a date material lands, and we will flag anything in the brief that will not achieve what you want.