For projects in Dallas
HVAC, plant and machine noise control in Dallas
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. Packaged rooftop units and ducted forced air are standard, so noise arrives through the duct rather than through the wall. Lining the first three metres of duct and treating the return path is usually the whole job.
- 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 / Start here
What you are buying, and what it fixes in Dallas
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.
Packaged rooftop units and ducted forced air are standard, so noise arrives through the duct rather than through the wall. Lining the first three metres of duct and treating the return path is usually the whole job.
Work reaching us from Dallas is mostly corporate campuses, multifamily, schools, clinics, restaurants, home theatres, studios.
- Multifamily party walls Apartments built in light frame share a wall that has far less mass than people expect. Neighbour complaints here are a mass and decoupling problem, and treating the room will not fix them.
- Campus scale repetition A corporate campus means the same detail across many floors and buildings. The value is in consistent material and a build-up that is easy for a crew to repeat correctly.
- Programmes that will not slip Fast build schedules leave no room for a container arriving late. We quote the sea leg and the road leg separately so you can see where the time actually goes.
- 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 Dallas.
02 / The build-up
The build-up, layer by layer
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Layer 1
SoundBlanket mass loaded vinyl
A limp, high density sheet that adds mass to a partition, floor or duct without adding depth. In Dallas, packaged rooftop units and ducted forced air are standard, so noise arrives through the duct rather than through the wall. Lining the first three metres of duct and treating the return path is usually the whole job.
Duct and plant wrap. Membrane wrapped over the duct with a decoupling layer beneath, sealed at every lap.
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Layer 2
Wood wool acoustic panels
Wood fibre bound into a rigid board with an open texture. In Dallas, churches, school gyms and multipurpose halls double as performance spaces, which means a room designed for neither speech nor music has to carry both.
Direct fix. Mechanically fixed to the soffit or wall. Durable and simple.
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Layer 3
Ceiling baffles and clouds
PET felt suspended from the soffit, vertically as baffles or horizontally as clouds. In Dallas, public school buildings run long corridors with hard floors and lay-in tile ceilings that were chosen for cost, not for speech. Classroom reverberation and corridor spill are the two complaints, and both respond to ceiling area rather than wall panels.
Horizontal clouds. Flat rafts over the occupied zone, which also reflect early speech energy back down where it helps.
If you are specifying for a Dallas project, we can give you a section, a BOQ and the honest limits of each layer. See how we support architects.
03 / What drives the brief
The Dallas conditions that change the answer
- Multifamily party walls
Apartments built in light frame share a wall that has far less mass than people expect. Neighbour complaints here are a mass and decoupling problem, and treating the room will not fix them.
- Campus scale repetition
A corporate campus means the same detail across many floors and buildings. The value is in consistent material and a build-up that is easy for a crew to repeat correctly.
- Programmes that will not slip
Fast build schedules leave no room for a container arriving late. We quote the sea leg and the road leg separately so you can see where the time actually goes.
- Big rooms, big systems
Dedicated home theatres here are larger than most, which makes low frequency control the main event rather than an afterthought.
- Plant and HVAC
Packaged rooftop units and ducted forced air are standard, so noise arrives through the duct rather than through the wall. Lining the first three metres of duct and treating the return path is usually the whole job.
04 / Room by room
Room by room, on a typical Dallas job
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At source
Enclosure, barrier or anti vibration mounts at the machine. Apartments built in light frame share a wall that has far less mass than people expect. Neighbour complaints here are a mass and decoupling problem, and treating the room will not fix them.
- 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 corporate campus means the same detail across many floors and buildings. The value is in consistent material and a build-up that is easy for a crew to repeat correctly.
- 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
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At the receiver
Only after the first two, and only for what is left. Fast build schedules leave no room for a container arriving late. We quote the sea leg and the road leg separately so you can see where the time actually goes.
- 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
Designers get colour, pattern and CNC options with the absorption figure attached to each. See how we work with interior designers.
04 / Climate
The Dallas climate decides the material list
Dallas is hot dry summers and mild wet winters, and that narrows the material list before acoustics is discussed.
The swing between a dry summer and a wet winter moves timber. PET felt is dimensionally stable across that swing; slat panels want a stable substrate and a ventilated fixing.
The failure we design against here is seasonal movement in timber and winter damp in unheated stock.
Consultants get the raw data, not a sales sheet. That is the whole of our side of the job, and it is set out under working with acoustic consultants.
06 / Worth knowing
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.
-
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 Dallas job
Apartments built in light frame share a wall that has far less mass than people expect. Neighbour complaints here are a mass and decoupling problem, and treating the room will not fix them.
05 / Getting it there
What the route into Dallas actually looks like
| Ships from | Palwal, Haryana, India |
|---|---|
| Arrives at | Port of Houston, then road north to Dallas |
| Dispatch | 4 to 7 working days |
| Freight | Sea, or air into DFW |
| Support | Drawings, build-ups, BOQ and material that arrives complete |
Standard items dispatch in 4 to 7 working days. Add the sea leg to Houston and the road leg north, and plan the full window into the programme. We quote it in the open.
Sea freight into the Port of Houston, then road to Dallas. Air freight into DFW for samples, colour approvals and urgent quantities.
Questions from Dallas projects
What makes HVAC, plant and machine noise control different in Dallas?
Packaged rooftop units and ducted forced air are standard, so noise arrives through the duct rather than through the wall. Lining the first three metres of duct and treating the return path is usually the whole job. Apartments built in light frame share a wall that has far less mass than people expect. Neighbour complaints here are a mass and decoupling problem, and treating the room will not fix them.
Where should the budget go first on a Dallas 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 Dallas?
No. We manufacture in India and supply into Dallas. 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 Dallas site?
ships from: Palwal, Haryana, India, arrives at: Port of Houston, then road north to Dallas, dispatch: 4 to 7 working days. Standard items dispatch in 4 to 7 working days. Add the sea leg to Houston and the road leg north, and plan the full window into the programme. We quote it in the open.
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
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.