For projects in Shillong
HVAC, plant and machine noise control in Shillong
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 this is, and what it changes in a Shillong room
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 Shillong is mostly practice and performance rooms, schools and colleges, hotels, churches and halls, clinics, offices.
- Rain on the roof Metal roofing under extreme rainfall turns a downpour into a noise source that stops a lesson or a recording. It is worth designing for rather than discovering.
- A music city Practice rooms, choirs and performance spaces in ordinary buildings. Isolation from neighbours is what keeps them usable.
- Timber and light construction Hill building is often light, which passes low frequency easily. Mass and decoupling do the work.
- 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 Shillong.
02 / The build-up
What goes where, from the structure in
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Layer 1
Wood wool acoustic panels
Wood fibre bound into a rigid board with an open texture. In Shillong, 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.
On a cavity. Mounted on battens with an air gap, which is where the low mid performance comes from.
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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 Shillong, auditoriums, banquet halls and places of worship are large hard volumes in concrete and stone where speech falls apart long before anyone calls the room echoey.
Corner loading. Low frequency energy collects in corners, so absorber in the corners does more than the same area spread across a wall.
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Layer 3
Ceiling baffles and clouds
PET felt suspended from the soffit, vertically as baffles or horizontally as clouds. In Shillong, schools have hard floors, bare walls and long corridors that amplify noise, with music a strong part of school life.
Horizontal clouds. Flat rafts over the occupied zone, which also reflect early speech energy back down where it helps.
We would rather argue about the build-up at design stage than on site. See how we support architects.
03 / Local conditions
What we see driving Shillong briefs
- Rain on the roof
Metal roofing under extreme rainfall turns a downpour into a noise source that stops a lesson or a recording. It is worth designing for rather than discovering.
- A music city
Practice rooms, choirs and performance spaces in ordinary buildings. Isolation from neighbours is what keeps them usable.
- Timber and light construction
Hill building is often light, which passes low frequency easily. Mass and decoupling do the work.
- Hill roads on the last leg
The final stretch is steep and rough. We pack for that rather than for a straight highway run.
- 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
What each space in a Shillong project needs
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At source
Enclosure, barrier or anti vibration mounts at the machine. Metal roofing under extreme rainfall turns a downpour into a noise source that stops a lesson or a recording. It is worth designing for rather than discovering.
- 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
- 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. Practice rooms, choirs and performance spaces in ordinary buildings. Isolation from neighbours is what keeps them usable.
- 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
- 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. Hill building is often light, which passes low frequency easily. Mass and decoupling do the work.
- Soundproofing materials, Mass, then decoupling, then cavity absorption, then sealing
- Wood wool acoustic panels, 0.30
- 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 / Durability
What the Shillong climate rules in and rules out
Shillong 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 Shillong 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
Where this kind of project usually fails
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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
Plant noise treated as a room problem is the most reliable way to spend a budget and change nothing anyone can hear.
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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 Shillong job
Metal roofing under extreme rainfall turns a downpour into a noise source that stops a lesson or a recording. It is worth designing for rather than discovering.
05 / Route to site
What the route into Shillong actually looks like
| 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 two thousand kilometres, normally five days on a dedicated truck. The final hill leg is planned into the schedule.
Questions from Shillong projects
What makes HVAC, plant and machine noise control different in Shillong?
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. Metal roofing under extreme rainfall turns a downpour into a noise source that stops a lesson or a recording. It is worth designing for rather than discovering.
Where should the budget go first on a Shillong 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 Shillong?
No. We manufacture in India and supply into Shillong. 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 Shillong 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
Tell us the room, we will tell you the build-up
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.