For projects in Delhi
HVAC, plant and machine noise control in Delhi
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. Diesel generator sets, split unit banks and VRF outdoor units sit on terraces and in shafts close to bedrooms and offices.
- 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 product
What this material is and where it earns its place in Delhi
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.
Diesel generator sets, split unit banks and VRF outdoor units sit on terraces and in shafts close to bedrooms and offices.
Work reaching us from Delhi is mostly offices, studios, banquet halls, clinics, schools, home theatres, restaurants, showrooms.
- We can come and look Delhi is close enough that a site visit is straightforward. On a difficult room that is worth more than any amount of specification over email.
- Old walls and new towers Lutyens bungalows, 1970s DDA flats and glass towers all fail differently. We ask what the wall actually is before quoting anything.
- Traffic and generators get in On most Delhi sites the noise arrives through windows, shafts and gaps rather than through the wall itself. Fixing the weakest path first saves money.
- 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 Delhi.
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 Delhi, diesel generator sets, split unit banks and VRF outdoor units sit on terraces and in shafts close to bedrooms and offices.
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 Delhi, 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.
First reflection points. Mirror trick placement on side walls and ceiling, which is a handful of panels rather than a lined room.
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Layer 3
Ceiling baffles and clouds
PET felt suspended from the soffit, vertically as baffles or horizontally as clouds. In Delhi, classrooms are concrete and tile with bare walls and high ceilings, and class sizes push levels up. Corridors act as reverberation chambers that feed every room off them.
Horizontal clouds. Flat rafts over the occupied zone, which also reflect early speech energy back down where it helps.
Architects working in Delhi 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 / In this market
What we see driving Delhi briefs
- We can come and look
Delhi is close enough that a site visit is straightforward. On a difficult room that is worth more than any amount of specification over email.
- Old walls and new towers
Lutyens bungalows, 1970s DDA flats and glass towers all fail differently. We ask what the wall actually is before quoting anything.
- Traffic and generators get in
On most Delhi sites the noise arrives through windows, shafts and gaps rather than through the wall itself. Fixing the weakest path first saves money.
- Same day from the plant
Ninety kilometres of road. Low freight cost, next-day samples, and a damaged sheet replaced without a two-week wait.
- Plant and HVAC
Diesel generator sets, split unit banks and VRF outdoor units sit on terraces and in shafts close to bedrooms and offices.
04 / Room by room
Space by space, for Delhi briefs
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At source
Enclosure, barrier or anti vibration mounts at the machine. Delhi is close enough that a site visit is straightforward. On a difficult room that is worth more than any amount of specification over email.
- 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. Lutyens bungalows, 1970s DDA flats and glass towers all fail differently. We ask what the wall actually is before quoting anything.
- 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. On most Delhi sites the noise arrives through windows, shafts and gaps rather than through the wall itself. Fixing the weakest path first saves money.
- 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
The Delhi climate decides the material list
Delhi 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.
On a Delhi job with a consultant involved, our part is material that matches the submitted data. See working with acoustic consultants.
06 / Read this first
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
This is the one that comes back as a second fit-out rather than a snag.
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Treating it as a generic Delhi job
Delhi is close enough that a site visit is straightforward. On a difficult room that is worth more than any amount of specification over email.
05 / Route to site
What the route into Delhi actually looks like
| Made at | Our own plant, Palwal, Haryana |
|---|---|
| Reaches site in | same or next day |
| Dispatch | 2 to 4 working days |
| To site | same or next day |
| 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.
Same day or next day by road from Palwal, about ninety kilometres south. Small consignments on a shared vehicle, full loads on a dedicated truck.
Questions from Delhi projects
What makes HVAC, plant and machine noise control different in Delhi?
Diesel generator sets, split unit banks and VRF outdoor units sit on terraces and in shafts close to bedrooms and offices. Delhi is close enough that a site visit is straightforward. On a difficult room that is worth more than any amount of specification over email.
Where should the budget go first on a Delhi 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 Delhi?
No. We manufacture in India and supply into Delhi. 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 Delhi site?
made at: Our own plant, Palwal, Haryana, reaches site in: same or next day, 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
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.