For projects in Nepal
HVAC, plant and machine noise control in Nepal
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 and generator sets, with generators close to occupied rooms during outages.
- 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 you are buying, and what it fixes in Nepal
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 and generator sets, with generators close to occupied rooms during outages.
Work reaching us from Nepal is mostly hotels and guest houses, offices, hospitals, schools, assembly halls, houses.
- Reached entirely by road No port, no container, no sea leg. That keeps lead times short and makes small or repeat orders practical in a way they are not for most export markets.
- Rebuilt and reinforced structures A great deal of stock has been rebuilt or retrofitted for seismic performance. Movement joints must stay free and an acoustic layer must not stiffen across them.
- Hospitality in dense valleys Hotels and guest houses packed into tight streets where street noise reaches rooms through openings rather than walls.
- 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 Nepal.
02 / The build-up
The build-up, layer by layer
-
Layer 1
Soundproofing materials
The blocking side of the range taken together: mass loaded vinyl, resilient layers, cavity absorption and the build-ups they belong in. In Nepal, split units and generator sets, with generators close to occupied rooms during outages.
Independent leaf. A second wall that does not touch the first. Nothing else comes close for the money.
-
Layer 2
Wood wool acoustic panels
Wood fibre bound into a rigid board with an open texture. In Nepal, temples, function halls and conference rooms are hard volumes carrying amplified speech and music.
With a porous backing. Board over mineral backing where the room needs more than the board alone gives.
-
Layer 3
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 Nepal, classrooms are concrete and tile with large class sizes and street noise through open windows.
First reflection points. Mirror trick placement on side walls and ceiling, which is a handful of panels rather than a lined room.
We would rather argue about the build-up at design stage than on site. See how we support architects.
03 / In this market
What decides the build-up in Nepal
- Reached entirely by road
No port, no container, no sea leg. That keeps lead times short and makes small or repeat orders practical in a way they are not for most export markets.
- Rebuilt and reinforced structures
A great deal of stock has been rebuilt or retrofitted for seismic performance. Movement joints must stay free and an acoustic layer must not stiffen across them.
- Hospitality in dense valleys
Hotels and guest houses packed into tight streets where street noise reaches rooms through openings rather than walls.
- Packing for mountain roads
The final leg is often on rough road. We brace and wrap for that rather than for a smooth port transfer.
- Plant and HVAC
Split units and generator sets, with generators close to occupied rooms during outages.
04 / Room by room
Space by space, for Nepal briefs
-
At source
Enclosure, barrier or anti vibration mounts at the machine. No port, no container, no sea leg. That keeps lead times short and makes small or repeat orders practical in a way they are not for most export markets.
- 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
- Ceiling baffles and clouds, Made to the drawing, standard and custom
-
In the path
Duct lining, attenuators and lagging on the first run out of the plant. A great deal of stock has been rebuilt or retrofitted for seismic performance. Movement joints must stay free and an acoustic layer must not stiffen across them.
- SoundBlanket mass loaded vinyl, STC 30, 5.25 kg per sq m
- Soundproofing materials, Mass, then decoupling, then cavity absorption, then sealing
- Ceiling baffles and clouds, Both faces work, which is why suspended area outperforms the same area laid flat
-
At the receiver
Only after the first two, and only for what is left. Hotels and guest houses packed into tight streets where street noise reaches rooms through openings rather than walls.
- SoundBlanket mass loaded vinyl, STC 34, 8.4 kg per sq m
- Soundproofing materials, ASTM E90 for the barrier, ASTM C423 for the absorber
- Ceiling baffles and clouds, ASTM C423
If the visual is fixed and the room still has to perform, that is a solvable problem and a conversation worth having early. See how we work with interior designers.
04 / Durability
What the Nepal climate rules in and rules out
Nepal 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 Nepal project, we supply to their specification and send the test reports rather than describing them. More on working with acoustic consultants.
06 / Straight talk
Where this kind of project usually fails
-
Absorption on the office wall for a plant room problem
Noise with a source is fixed at the source. Treating the receiving room is the expensive way to get a small result.
-
Lagging a duct that is carrying the noise as breakout from the fan
Noise with a source is fixed at the source. Treating the receiving room is the expensive way to get a small result.
-
Ignoring structure borne vibration through the mounts
It sounds like a small detail until the room is finished and the complaint arrives.
-
Treating it as a generic Nepal job
No port, no container, no sea leg. That keeps lead times short and makes small or repeat orders practical in a way they are not for most export markets.
05 / Getting it there
What the route into Nepal actually looks like
| Ships from | Palwal, Haryana, India |
|---|---|
| Arrives at | Overland through the India border, then road to site |
| Dispatch | 4 to 7 working days |
| Freight | Road via the India border |
| 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.
Overland by road through the India border, then on to site. No sea leg and no port handling.
Questions from Nepal projects
What makes HVAC, plant and machine noise control different in Nepal?
Split units and generator sets, with generators close to occupied rooms during outages. No port, no container, no sea leg. That keeps lead times short and makes small or repeat orders practical in a way they are not for most export markets.
Where should the budget go first on a Nepal 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 Nepal?
No. We manufacture in India and supply into Nepal. 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 Nepal site?
ships from: Palwal, Haryana, India, arrives at: Overland through the India border, then road to site, 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?
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
Send a plan and a section, get a real build-up
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.