For projects in Hawaii
HVAC, plant and machine noise control in Hawaii
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. Packaged rooftop units and ducted forced air are standard, so noise arrives through the duct rather than through the wall. Lining the first three metres of duct and treating the return path is usually the whole job.
- 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 / Start here
The product, described honestly, for a Hawaii 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.
Packaged rooftop units and ducted forced air are standard, so noise arrives through the duct rather than through the wall. Lining the first three metres of duct and treating the return path is usually the whole job.
Work reaching us from Hawaii is mostly resorts and hotels, timber housing, offices, schools, clinics, venues.
- A genuinely long route This is one of the longest legs we run. Ordering to a real schedule matters more here than anywhere, so we quote the full window.
- Buildings open to the trade winds Louvres, lanais and openable walls mean there is often no envelope to isolate. We will tell you what cannot be fixed rather than sell around it.
- Salt air is relentless PET felt does not absorb moisture, rot or corrode, which matters where almost everything else degrades quickly.
- 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 Hawaii.
02 / The build-up
What goes where, from the structure in
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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 Hawaii, packaged rooftop units and ducted forced air are standard, so noise arrives through the duct rather than through the wall. Lining the first three metres of duct and treating the return path is usually the whole job.
Duct and plant wrap. Membrane wrapped over the duct with a decoupling layer beneath, sealed at every lap.
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Layer 2
Wood wool acoustic panels
Wood fibre bound into a rigid board with an open texture. In Hawaii, churches, school gyms and multipurpose halls double as performance spaces, which means a room designed for neither speech nor music has to carry both.
With a porous backing. Board over mineral backing where the room needs more than the board alone gives.
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Layer 3
Ceiling baffles and clouds
PET felt suspended from the soffit, vertically as baffles or horizontally as clouds. In Hawaii, public school buildings run long corridors with hard floors and lay-in tile ceilings that were chosen for cost, not for speech. Classroom reverberation and corridor spill are the two complaints, and both respond to ceiling area rather than wall panels.
Mixed with services. Set out around ducts, trays and lighting rather than fighting them, coordinated from your reflected ceiling plan.
If you are specifying for a Hawaii project, we can give you a section, a BOQ and the honest limits of each layer. See how we support architects.
03 / On the ground
What the buildings in Hawaii do to the specification
- A genuinely long route
This is one of the longest legs we run. Ordering to a real schedule matters more here than anywhere, so we quote the full window.
- Buildings open to the trade winds
Louvres, lanais and openable walls mean there is often no envelope to isolate. We will tell you what cannot be fixed rather than sell around it.
- Salt air is relentless
PET felt does not absorb moisture, rot or corrode, which matters where almost everything else degrades quickly.
- Inter-island freight
Material bound for a neighbouring island has a second leg. Tell us and we pack for it.
- Plant and HVAC
Packaged rooftop units and ducted forced air are standard, so noise arrives through the duct rather than through the wall. Lining the first three metres of duct and treating the return path is usually the whole job.
04 / Room by room
Space by space, for Hawaii briefs
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At source
Enclosure, barrier or anti vibration mounts at the machine. This is one of the longest legs we run. Ordering to a real schedule matters more here than anywhere, so we quote the full window.
- Soundproofing materials, 2100 kg per cubic metre. 2.5 mm STC 30 at 5.25 kg per sq m, 4 mm STC 34 at 8.4, 6 mm at 12.6
- Wood wool acoustic panels, 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. Louvres, lanais and openable walls mean there is often no envelope to isolate. We will tell you what cannot be fixed rather than sell around it.
- Soundproofing materials, 1800 x 900 x 20 mm, 100 kg per cubic metre, NRC 0.85
- Wood wool acoustic panels, 400 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. PET felt does not absorb moisture, rot or corrode, which matters where almost everything else degrades quickly.
- Soundproofing materials, Mass, then decoupling, then cavity absorption, then sealing
- Wood wool acoustic panels, 0.30
- Ceiling baffles and clouds, ASTM C423
Designers get colour, pattern and CNC options with the absorption figure attached to each. See how we work with interior designers.
04 / Climate and durability
Durability in Hawaii, before acoustics is discussed
Hawaii 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 Hawaii project, we supply to their specification and send the test reports rather than describing them. More on working with acoustic consultants.
06 / Before you buy
The six errors that cost the most
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Absorption on the office wall for a plant room problem
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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Lagging a duct that is carrying the noise as breakout from the fan
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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Ignoring structure borne vibration through the mounts
It sounds like a small detail until the room is finished and the complaint arrives.
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Treating it as a generic Hawaii job
This is one of the longest legs we run. Ordering to a real schedule matters more here than anywhere, so we quote the full window.
05 / Getting it there
Supply into Hawaii, start to site
| Ships from | Palwal, Haryana, India |
|---|---|
| Arrives at | Honolulu, then road or inter-island onward |
| Dispatch | 4 to 7 working days |
| Freight | Sea via Honolulu |
| 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 Honolulu, then road or inter-island onward. Air freight for samples only.
Questions from Hawaii projects
What makes HVAC, plant and machine noise control different in Hawaii?
Packaged rooftop units and ducted forced air are standard, so noise arrives through the duct rather than through the wall. Lining the first three metres of duct and treating the return path is usually the whole job. This is one of the longest legs we run. Ordering to a real schedule matters more here than anywhere, so we quote the full window.
Where should the budget go first on a Hawaii 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 Hawaii?
No. We manufacture in India and supply into Hawaii. 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 Hawaii site?
ships from: Palwal, Haryana, India, arrives at: Honolulu, then road or inter-island onward, 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
Drawings in, BOQ and a delivered date out
We quote from drawings, not from a square foot rate. Send a plan and the section through the critical wall or ceiling and you will get something you can actually build from.