For projects in Indonesia
School and classroom acoustics in Indonesia
Hard floors, bare walls and long corridors that amplify everything. Children with developing language, and anyone with a hearing difficulty, lose more from a live classroom than adults do, which is why intelligibility is the target rather than quiet. Classrooms are hard, naturally ventilated and open to corridor and street noise, so absorption alone will not fix intelligibility.
- Classroom RT
- A number, set against room volume, achieved mostly at the ceiling.
- Corridor spill
- Long hard circulation feeds every room off it. Treating the corridor helps every classroom at once.
- Halls and gyms
- Dual use rooms carrying speech, music and sport, where durability decides the product.
- Quote
- From a plan and a section, within 48 hours
01 / The material
What this material is and where it earns its place in Indonesia
Hard floors, bare walls and long corridors that amplify everything. Children with developing language, and anyone with a hearing difficulty, lose more from a live classroom than adults do, which is why intelligibility is the target rather than quiet.
Classrooms are hard, naturally ventilated and open to corridor and street noise, so absorption alone will not fix intelligibility.
Work reaching us from Indonesia is mostly offices and towers, hotels and resorts, manufacturing plants, hospitals, schools, studios.
- An onward leg is normal Material often continues by road or inter-island ferry after the port. Tell us and we brace and wrap for the second journey.
- Tropical humidity all year PET felt does not absorb moisture, shed fibre or feed mould, which matters where mineral products sag within a couple of seasons.
- Dense cities, constant traffic Street noise reaches rooms through openings and glazing long before it comes through the wall. Fix the weakest path first.
- Classroom RT A number, set against room volume, achieved mostly at the ceiling.
Full specification
Thickness, density, NRC by frequency, fire class, standard sizes and build-up detail for school acoustics are on the main product page. This page covers what that means for a project in Indonesia.
02 / The build-up
The build-up, layer by layer
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Layer 1
Ceiling baffles and clouds
PET felt suspended from the soffit, vertically as baffles or horizontally as clouds. In Indonesia, split units everywhere, with condensers on balconies and light wells that channel noise straight back into bedrooms.
Horizontal clouds. Flat rafts over the occupied zone, which also reflect early speech energy back down where it helps.
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Layer 2
Acoustic panels
The full absorber range rather than one product: plain PET felt, printed felt, grooved panels and fabric finishes, chosen by how the room is used and how it has to look. In Indonesia, places of worship, function halls and community buildings are large hard rooms carrying amplified speech and music.
Ceiling first. In most rooms the ceiling is the largest untreated surface and the cheapest square metre of result.
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Layer 3
Acoustic carpet and rugs
A tile carpet with a dense polyester face on a felt backing. In Indonesia, classrooms are hard, naturally ventilated and open to corridor and street noise, so absorption alone will not fix intelligibility.
Zoned. Carpet in the circulation and meeting zones, hard floor elsewhere, so the treatment sits where the noise is made.
If you are specifying for a Indonesia project, we can give you a section, a BOQ and the honest limits of each layer. See how we support architects.
03 / In this market
What the buildings in Indonesia do to the specification
- An onward leg is normal
Material often continues by road or inter-island ferry after the port. Tell us and we brace and wrap for the second journey.
- Tropical humidity all year
PET felt does not absorb moisture, shed fibre or feed mould, which matters where mineral products sag within a couple of seasons.
- Dense cities, constant traffic
Street noise reaches rooms through openings and glazing long before it comes through the wall. Fix the weakest path first.
- Manufacturing at scale
Plant noise where enclosure and mass do the work, and measurement rooms that need a genuinely low background.
- Assembly and performance rooms
Places of worship, function halls and community buildings are large hard rooms carrying amplified speech and music.
- School and campus buildings
Classrooms are hard, naturally ventilated and open to corridor and street noise, so absorption alone will not fix intelligibility.
04 / Room by room
Where the money goes on a Indonesia project
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Classroom RT
A number, set against room volume, achieved mostly at the ceiling. Material often continues by road or inter-island ferry after the port. Tell us and we brace and wrap for the second journey.
- Ceiling baffles and clouds, 100% PET non-woven, the panel family
- Acoustic panels, 1800 x 900 mm, image printed into the felt rather than onto a facing
- Acoustic carpet and rugs, High density polyester
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Corridor spill
Long hard circulation feeds every room off it. Treating the corridor helps every classroom at once. PET felt does not absorb moisture, shed fibre or feed mould, which matters where mineral products sag within a couple of seasons.
- Ceiling baffles and clouds, 9 to 24 mm
- Acoustic panels, Cut pattern in PET felt, adds visual rhythm without changing the absorber
- Acoustic carpet and rugs, Felt
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Halls and gyms
Dual use rooms carrying speech, music and sport, where durability decides the product. Street noise reaches rooms through openings and glazing long before it comes through the wall. Fix the weakest path first.
- Ceiling baffles and clouds, Made to the drawing, standard and custom
- Acoustic panels, ASTM C423
- Acoustic carpet and rugs, 64 sq ft per pack
Designers get colour, pattern and CNC options with the absorption figure attached to each. See how we work with interior designers.
04 / Conditions
Durability in Indonesia, before acoustics is discussed
Indonesia is warm and humid through most of the year, with a long wet season, and that narrows the material list before acoustics is discussed.
Humidity is the deciding factor. PET felt does not absorb moisture, shed fibre or feed mould, which is why it outlasts fabric-wrapped mineral wool in this climate. Wood wool and timber need a ventilated cavity behind them.
The failure we design against here is mould, sagging fabric finishes and swelling in timber.
On a Indonesia job with a consultant involved, our part is material that matches the submitted data. See working with acoustic consultants.
06 / Straight talk
What we watch go wrong on jobs like this
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Panels at child height where they get damaged
It sounds like a small detail until the room is finished and the complaint arrives.
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Treating one classroom and leaving the corridor
This is the one that comes back as a second fit-out rather than a snag.
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Choosing a product that cannot take a football
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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Treating it as a generic Indonesia job
Material often continues by road or inter-island ferry after the port. Tell us and we brace and wrap for the second journey.
05 / Route to site
What the route into Indonesia actually looks like
| Ships from | Palwal, Haryana, India |
|---|---|
| Arrives at | Tanjung Priok, then road or onward by sea |
| Dispatch | 4 to 7 working days |
| Freight | Sea via Tanjung Priok |
| Support | Drawings, build-ups, BOQ and material that arrives complete |
Standard items dispatch in 4 to 7 working days. Grooved panels and custom colours take longer, and we say so before you order, not after.
Sea freight into Tanjung Priok, then road or inter-island onward. Air freight for samples and urgent quantities.
Questions from Indonesia projects
What makes school and classroom acoustics different in Indonesia?
Classrooms are hard, naturally ventilated and open to corridor and street noise, so absorption alone will not fix intelligibility. Material often continues by road or inter-island ferry after the port. Tell us and we brace and wrap for the second journey.
Where should the budget go first on a Indonesia project?
Classroom RT. A number, set against room volume, achieved mostly at the ceiling. Corridor spill. Long hard circulation feeds every room off it. Treating the corridor helps every classroom at once.
Do you have an office or installation team in Indonesia?
No. We manufacture in India and supply into Indonesia. 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 Indonesia site?
ships from: Palwal, Haryana, India, arrives at: Tanjung Priok, then road or onward by sea, dispatch: 4 to 7 working days. Standard items dispatch in 4 to 7 working days. Grooved panels and custom colours take longer, and we say so before you order, not after.
What goes wrong most often on this kind of project?
Panels at child height where they get damaged. Treating one classroom and leaving the corridor.
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 a plan and a section, get a real build-up
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.