For projects in Delhi
School and classroom acoustics in Delhi
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 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.
- 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 / Start here
The material, and what it actually does on a Delhi job
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 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.
Work reaching us from Delhi is mostly offices, studios, banquet halls, clinics, schools, home theatres, restaurants, showrooms.
- 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.
- 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.
- 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 Delhi.
02 / The build-up
What goes where, from the structure in
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Layer 1
Ceiling baffles and clouds
PET felt suspended from the soffit, vertically as baffles or horizontally as clouds. In Delhi, diesel generator sets, split unit banks and VRF outdoor units sit on terraces and in shafts close to bedrooms and offices.
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 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.
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 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.
Loose lay on tackifier. Tiles lifted individually for access under a raised floor, which is why tile beats broadloom in an office.
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 the buildings in Delhi do to the specification
- 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.
- 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.
- Assembly and performance rooms
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.
- School and campus buildings
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.
04 / Room by room
Where the money goes on a Delhi project
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Classroom RT
A number, set against room volume, achieved mostly at the ceiling. Ninety kilometres of road. Low freight cost, next-day samples, and a damaged sheet replaced without a two-week wait.
- Wood wool acoustic panels, 1200 x 600 mm
- Ceiling baffles and clouds, 9 to 24 mm
- Acoustic panels, Cut pattern in PET felt, adds visual rhythm without changing the absorber
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Corridor spill
Long hard circulation feeds every room off it. Treating the corridor helps every classroom at once. 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.
- Wood wool acoustic panels, 20 mm
- Ceiling baffles and clouds, Made to the drawing, standard and custom
- Acoustic panels, ASTM C423
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Halls and gyms
Dual use rooms carrying speech, music and sport, where durability decides the product. Lutyens bungalows, 1970s DDA flats and glass towers all fail differently. We ask what the wall actually is before quoting anything.
- 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
- Acoustic panels, 9 to 24 mm, 1220 x 2440 mm standard, up to 2440 x 4270 mm, 1200 to 3600 GSM
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
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 / Straight talk
Six mistakes that turn into a second fit-out
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Panels at child height where they get damaged
This is the one that comes back as a second fit-out rather than a snag.
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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 Delhi job
Ninety kilometres of road. Low freight cost, next-day samples, and a damaged sheet replaced without a two-week wait.
05 / Route to site
Supply into Delhi, start to site
| 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 school and classroom acoustics different 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. 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?
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 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?
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 the drawings, get a straight answer
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.