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For projects in New Zealand
Auditorium acoustics and soundproofing in New Zealand
A large hard volume where speech falls apart long before anyone calls the room echoey. The target is intelligibility at the back row, which is a reverberation and early reflection problem, not a loudspeaker problem. School halls, marae and community centres carry speech and performance in the same hard room.
- Reverberation time
- Set against use. Speech and music want different numbers, and a dual use hall needs a decision.
- Early reflections
- Shaped surfaces that send energy to the rear seats rather than absorbing everything.
- Rear wall
- The single worst surface in most halls, and the first one to treat.
- Quote
- From a plan and a section, within 48 hours
01 / The product
What you are buying, and what it fixes in New Zealand
A large hard volume where speech falls apart long before anyone calls the room echoey. The target is intelligibility at the back row, which is a reverberation and early reflection problem, not a loudspeaker problem.
School halls, marae and community centres carry speech and performance in the same hard room.
Work reaching us from New Zealand is mostly timber frame housing, apartments, offices, schools, clinics, studios.
- Timber frame, very little mass Light construction passes low frequency easily. Added mass and a decoupled layer do the work, and absorption alone will not.
- Designed to move Seismic detailing means junctions and joints that have to stay flexible. An acoustic build-up has to respect that rather than bridge it rigidly.
- A long sea leg This is one of the longest routes we run. Ordering to a real schedule matters more here than anywhere else, so we quote the full window.
- Reverberation time Set against use. Speech and music want different numbers, and a dual use hall needs a decision.
Full specification
Thickness, density, NRC by frequency, fire class, standard sizes and build-up detail for auditorium acoustics are on the main product page. This page covers what that means for a project in New Zealand.
02 / The build-up
How the layers stack, from the structure inwards
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Layer 1
Wooden slat acoustic panels
Timber slats on an acoustic backing. In New Zealand, heat pumps and ducted systems, with outdoor units close to boundaries in dense suburbs.
Feature wall only. Slats where they are seen, plain felt elsewhere, to hold the budget where it shows.
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Layer 2
Ceiling baffles and clouds
PET felt suspended from the soffit, vertically as baffles or horizontally as clouds. In New Zealand, school halls, marae and community centres carry speech and performance in the same hard room.
Vertical baffles. Hung on edge in rows. Both faces absorb, so coverage figures based on plan area understate them.
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Layer 3
Acoustic carpet and rugs
A tile carpet with a dense polyester face on a felt backing. In New Zealand, classroom acoustics are taken seriously and open plan learning spaces are common, which makes speech intelligibility the design target.
Loose lay on tackifier. Tiles lifted individually for access under a raised floor, which is why tile beats broadloom in an office.
Architects working in New Zealand usually need the build-up before the product. We will draw the section and mark what does the work. See how we support architects.
03 / Local conditions
What decides the build-up in New Zealand
- Timber frame, very little mass
Light construction passes low frequency easily. Added mass and a decoupled layer do the work, and absorption alone will not.
- Designed to move
Seismic detailing means junctions and joints that have to stay flexible. An acoustic build-up has to respect that rather than bridge it rigidly.
- A long sea leg
This is one of the longest routes we run. Ordering to a real schedule matters more here than anywhere else, so we quote the full window.
- Damp and variable climate
PET felt does not absorb moisture, shed fibre or feed mould, which suits cold external walls and sealed rooms.
- Assembly and performance rooms
School halls, marae and community centres carry speech and performance in the same hard room.
- School and campus buildings
Classroom acoustics are taken seriously and open plan learning spaces are common, which makes speech intelligibility the design target.
04 / Room by room
Space by space, for New Zealand briefs
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Reverberation time
Set against use. Speech and music want different numbers, and a dual use hall needs a decision. Light construction passes low frequency easily. Added mass and a decoupled layer do the work, and absorption alone will not.
- Wooden slat acoustic panels, MDF, FR MDF, HDF or HDHMR
- PET felt acoustic panels, 9, 12, 18 and 24 mm standard, tolerance plus or minus 5 percent
- Ceiling baffles and clouds, Made to the drawing, standard and custom
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Early reflections
Shaped surfaces that send energy to the rear seats rather than absorbing everything. Seismic detailing means junctions and joints that have to stay flexible. An acoustic build-up has to respect that rather than bridge it rigidly.
- Wooden slat acoustic panels, 13-3, 14-2, 28-4 and 59-5
- PET felt acoustic panels, 4 to 24 mm
- Ceiling baffles and clouds, Both faces work, which is why suspended area outperforms the same area laid flat
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Rear wall
The single worst surface in most halls, and the first one to treat. This is one of the longest routes we run. Ordering to a real schedule matters more here than anywhere else, so we quote the full window.
- Wooden slat acoustic panels, 2440 x 192 mm and 2440 x 128 mm
- PET felt acoustic panels, 1220 x 2440 mm standard, 4 x 8 ft
- Ceiling baffles and clouds, ASTM C423
For a New Zealand interior where the finish leads, we will say plainly what each option costs you acoustically. See how we work with interior designers.
04 / Climate and durability
Durability in New Zealand, before acoustics is discussed
New Zealand is cool and damp, with long heating seasons and cold external walls, and that narrows the material list before acoustics is discussed.
Cold wall build-ups and long heating seasons mean interstitial condensation is a real risk behind any lining. PET felt is unaffected by damp air and will not feed mould where a fabric-faced mineral product would.
The failure we design against here is condensation behind linings in older, poorly insulated stock.
Consultants get the raw data, not a sales sheet. That is the whole of our side of the job, and it is set out under working with acoustic consultants.
06 / Straight talk
Where this kind of project usually fails
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Absorbing the whole room and losing the back rows
Small on the drawing, expensive on site, and almost always found after handover.
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Adding speakers to fix a reverberation problem
Small on the drawing, expensive on site, and almost always found after handover.
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Ignoring the rear wall because it is behind the audience
This is the one that comes back as a second fit-out rather than a snag.
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Treating it as a generic New Zealand job
Light construction passes low frequency easily. Added mass and a decoupled layer do the work, and absorption alone will not.
05 / Route to site
Getting it to New Zealand, with real dates
| Ships from | Palwal, Haryana, India |
|---|---|
| Arrives at | Auckland or Tauranga, then road to site |
| Dispatch | 4 to 7 working days |
| Freight | Sea via Auckland |
| 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 Auckland or Tauranga, then road to site. Air freight for samples and genuinely urgent quantities.
Questions from New Zealand projects
What makes auditorium acoustics and soundproofing different in New Zealand?
School halls, marae and community centres carry speech and performance in the same hard room. Light construction passes low frequency easily. Added mass and a decoupled layer do the work, and absorption alone will not.
Where should the budget go first on a New Zealand project?
Reverberation time. Set against use. Speech and music want different numbers, and a dual use hall needs a decision. Early reflections. Shaped surfaces that send energy to the rear seats rather than absorbing everything.
Do you have an office or installation team in New Zealand?
No. We manufacture in India and supply into New Zealand. 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 New Zealand site?
ships from: Palwal, Haryana, India, arrives at: Auckland or Tauranga, 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?
Absorbing the whole room and losing the back rows. Adding speakers to fix a reverberation problem.
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.