For projects in Chennai
HVAC, plant and machine noise control in Chennai
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. Split units, VRF outdoor banks and diesel generator sets sit close to occupied areas, often on the same terrace as a bedroom. Generator enclosure and condenser screening are the recurring jobs.
- 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 / The material
What you are buying, and what it fixes in Chennai
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.
Split units, VRF outdoor banks and diesel generator sets sit close to occupied areas, often on the same terrace as a bedroom. Generator enclosure and condenser screening are the recurring jobs.
Work reaching us from Chennai is mostly IT corridor offices, automotive plants, recording and dubbing rooms, hospitals, schools, hotels.
- Dubbing and recording rooms A long established film sound industry, mostly in rooms inside occupied buildings. Isolation first, tuning second.
- Sealed against the heat Rooms stay closed and conditioned for most of the year, so sound builds up inside instead of leaking away.
- Salt air and humidity PET felt does not absorb moisture, rot or feed mould. On a coastal site that is the difference between a ceiling that lasts and one that sags in two monsoons.
- 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 Chennai.
02 / The build-up
The build-up, layer by layer
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Layer 1
Wood wool acoustic panels
Wood fibre bound into a rigid board with an open texture. In Chennai, split units, VRF outdoor banks and diesel generator sets sit close to occupied areas, often on the same terrace as a bedroom. Generator enclosure and condenser screening are the recurring jobs.
With a porous backing. Board over mineral backing where the room needs more than the board alone gives.
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Layer 2
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 Chennai, kalyana mandapams, temple halls and auditoria are very large hard volumes carrying amplified speech and music.
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 3
Ceiling baffles and clouds
PET felt suspended from the soffit, vertically as baffles or horizontally as clouds. In Chennai, very large school and college campuses in concrete and tile, with auditoria and seminar halls used constantly.
Mixed with services. Set out around ducts, trays and lighting rather than fighting them, coordinated from your reflected ceiling plan.
Architects working in Chennai 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 Chennai
- Dubbing and recording rooms
A long established film sound industry, mostly in rooms inside occupied buildings. Isolation first, tuning second.
- Sealed against the heat
Rooms stay closed and conditioned for most of the year, so sound builds up inside instead of leaking away.
- Salt air and humidity
PET felt does not absorb moisture, rot or feed mould. On a coastal site that is the difference between a ceiling that lasts and one that sags in two monsoons.
- Automotive plants
Presses, conveyors and test rooms where the answer is enclosure and mass rather than absorption on a far wall.
- Plant and HVAC
Split units, VRF outdoor banks and diesel generator sets sit close to occupied areas, often on the same terrace as a bedroom. Generator enclosure and condenser screening are the recurring jobs.
04 / Room by room
Space by space, for Chennai briefs
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At source
Enclosure, barrier or anti vibration mounts at the machine. A long established film sound industry, mostly in rooms inside occupied buildings. Isolation first, tuning second.
- SoundBlanket mass loaded vinyl, 2100 kg per cubic metre
- Soundproofing materials, 1800 x 900 x 20 mm, 100 kg per cubic metre, NRC 0.85
- Acoustic foam and BassBloc, 100 kg per cubic metre
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In the path
Duct lining, attenuators and lagging on the first run out of the plant. Rooms stay closed and conditioned for most of the year, so sound builds up inside instead of leaking away.
- SoundBlanket mass loaded vinyl, STC 30, 5.25 kg per sq m
- Soundproofing materials, Mass, then decoupling, then cavity absorption, then sealing
- Acoustic foam and BassBloc, 100 to 500 Hz
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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 feed mould. On a coastal site that is the difference between a ceiling that lasts and one that sags in two monsoons.
- SoundBlanket mass loaded vinyl, STC 34, 8.4 kg per sq m
- Soundproofing materials, ASTM E90 for the barrier, ASTM C423 for the absorber
- Acoustic foam and BassBloc, 0.85
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 / Conditions
Why the climate in Chennai changes the material, not the target
Chennai 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.
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 / Worth knowing
Six mistakes that turn into a second fit-out
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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
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
It sounds like a small detail until the room is finished and the complaint arrives.
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Treating it as a generic Chennai job
A long established film sound industry, mostly in rooms inside occupied buildings. Isolation first, tuning second.
05 / Supply
How material reaches a Chennai site
| Made at | Our own plant, Palwal, Haryana |
|---|---|
| Reaches site in | five days |
| Dispatch | 2 to 4 working days |
| To site | five days |
| Support | Drawings, build-ups, BOQ and material that arrives complete |
Standard items dispatch in 2 to 4 working days from our plant at Palwal. Grooved panels and custom colours take longer, and we say so before you order, not after.
By road from Palwal, roughly twenty two hundred kilometres, normally five days on a dedicated truck.
Questions from Chennai projects
What makes HVAC, plant and machine noise control different in Chennai?
Split units, VRF outdoor banks and diesel generator sets sit close to occupied areas, often on the same terrace as a bedroom. Generator enclosure and condenser screening are the recurring jobs. PET felt does not absorb moisture, rot or feed mould. On a coastal site that is the difference between a ceiling that lasts and one that sags in two monsoons.
Where should the budget go first on a Chennai 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 Chennai?
No. We manufacture in India and supply into Chennai. 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 Chennai site?
made at: Our own plant, Palwal, Haryana, reaches site in: five days, dispatch: 2 to 4 working days. Standard items dispatch in 2 to 4 working days from our plant at Palwal. 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?
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
One drawing gets you a proper answer. Build-up, quantities, a delivered date, and an honest note on anything we think is the wrong approach.