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For projects in New Zealand
HVAC, plant and machine noise control in New Zealand
Noise with a source. Almost every honest fix is at the machine, the duct or the plant room, and almost nothing useful happens by lining the far wall of the occupied space. Heat pumps and ducted systems, with outdoor units close to boundaries in dense suburbs.
- At source
- Enclosure, barrier or anti vibration mounts at the machine.
- In the path
- Duct lining, attenuators and lagging on the first run out of the plant.
- At the receiver
- Only after the first two, and only for what is left.
- Quote
- From a plan and a section, within 48 hours
01 / What it is
The product, described honestly, for a New Zealand brief
Noise with a source. Almost every honest fix is at the machine, the duct or the plant room, and almost nothing useful happens by lining the far wall of the occupied space.
Heat pumps and ducted systems, with outdoor units close to boundaries in dense suburbs.
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.
- At source Enclosure, barrier or anti vibration mounts at the machine.
Full specification
Thickness, density, NRC by frequency, fire class, standard sizes and build-up detail for HVAC and plant noise control are on the main product page. This page covers what that means for a project in New Zealand.
02 / The build-up
The build-up, layer by layer
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Layer 1
SoundBlanket mass loaded vinyl
A limp, high density sheet that adds mass to a partition, floor or duct without adding depth. In New Zealand, heat pumps and ducted systems, with outdoor units close to boundaries in dense suburbs.
Wall, decoupled. Independent stud, membrane between the boards, cavity absorption, two boards. The membrane is one part of a system, never the whole answer.
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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 New Zealand, school halls, marae and community centres carry speech and performance in the same hard room.
Independent leaf. A second wall that does not touch the first. Nothing else comes close for the money.
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Layer 3
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 New Zealand, classroom acoustics are taken seriously and open plan learning spaces are common, which makes speech intelligibility the design target.
Corner loading. Low frequency energy collects in corners, so absorber in the corners does more than the same area spread across a wall.
For a New Zealand practice, the useful thing is a detail you can put in a drawing set, not a brochure. See how we support architects.
03 / On the ground
What we see driving New Zealand briefs
- 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.
- Plant and HVAC
Heat pumps and ducted systems, with outdoor units close to boundaries in dense suburbs.
04 / Room by room
What each space in a New Zealand project needs
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At source
Enclosure, barrier or anti vibration mounts at the machine. Light construction passes low frequency easily. Added mass and a decoupled layer do the work, and absorption alone will not.
- Wood wool acoustic panels, 1200 x 600 mm
- Acoustic foam and BassBloc, 20 mm
- Ceiling baffles and clouds, Made to the drawing, standard and custom
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In the path
Duct lining, attenuators and lagging on the first run out of the plant. Seismic detailing means junctions and joints that have to stay flexible. An acoustic build-up has to respect that rather than bridge it rigidly.
- Wood wool acoustic panels, 20 mm
- Acoustic foam and BassBloc, 100 kg per cubic metre
- Ceiling baffles and clouds, Both faces work, which is why suspended area outperforms the same area laid flat
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At the receiver
Only after the first two, and only for what is left. 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.
- Wood wool acoustic panels, 400 kg per cubic metre
- Acoustic foam and BassBloc, 100 to 500 Hz
- 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 / Conditions
Why the climate in New Zealand changes the material, not the target
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.
If a consultant has set the target, we will quote against their figures rather than ours, and stay out of the scope they own. More on working with acoustic consultants.
06 / Straight talk
What we watch go wrong on jobs like this
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Absorption on the office wall for a plant room problem
Noise with a source is fixed at the source. Treating the receiving room is the expensive way to get a small result.
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Lagging a duct that is carrying the noise as breakout from the fan
Enclose the machine, break the vibration path, then deal with what is left. Doing it in the other order costs more and achieves less.
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Ignoring structure borne vibration through the mounts
Small on the drawing, expensive on site, and almost always found after handover.
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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 / Getting it there
Supply into New Zealand, start to site
| 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 HVAC, plant and machine noise control different in New Zealand?
Heat pumps and ducted systems, with outdoor units close to boundaries in dense suburbs. 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?
At source. Enclosure, barrier or anti vibration mounts at the machine. In the path. Duct lining, attenuators and lagging on the first run out of the plant.
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?
Absorption on the office wall for a plant room problem. Lagging a duct that is carrying the noise as breakout from the fan.
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
Send the drawings, get a straight answer
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.