For projects in Houston
HVAC, plant and machine noise control in Houston
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 / What it is
The material, and what it actually does on a Houston job
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 Houston is mostly control rooms and plant, corporate offices, medical and clinical spaces, schools, home theatres.
- The port is the advantage Container arrives in Houston itself, so there is no long domestic trucking leg. That is the practical reason a factory in India can be competitive here on landed cost.
- Light frame walls behave differently Gypsum on studs is not masonry. It is lighter, it resonates, and it passes low frequency far more easily, so the answer is added mass and a decoupled layer rather than more absorption.
- Industrial noise is a mass problem Compressors, generators and process plant are low frequency and structure-borne. Panels on a wall will not touch that, and we will tell you so rather than sell them to you.
- 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 Houston.
02 / The build-up
How the layers stack, from the structure inwards
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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 Houston, 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.
Floor, floating. Membrane under a resilient layer and a floating deck, so impact energy is broken before it reaches the slab.
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Layer 2
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 Houston, churches, school gyms and multipurpose halls double as performance spaces, which means a room designed for neither speech nor music has to carry both.
Resilient bar. Where a full independent leaf will not fit. Effective, and very easy to short circuit with one wrong screw.
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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 Houston, 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.
Behind a fabric frame. Where the room has to look finished, absorber inside a frame rather than foam on show.
For a Houston practice, the useful thing is a detail you can put in a drawing set, not a brochure. See how we support architects.
03 / In this market
What decides the build-up in Houston
- The port is the advantage
Container arrives in Houston itself, so there is no long domestic trucking leg. That is the practical reason a factory in India can be competitive here on landed cost.
- Light frame walls behave differently
Gypsum on studs is not masonry. It is lighter, it resonates, and it passes low frequency far more easily, so the answer is added mass and a decoupled layer rather than more absorption.
- Industrial noise is a mass problem
Compressors, generators and process plant are low frequency and structure-borne. Panels on a wall will not touch that, and we will tell you so rather than sell them to you.
- Humidity and long transit
Gulf humidity is hard on mineral products. Our PET felt does not absorb moisture, shed fibre or feed mould, and it travels a long sea leg sealed and dry.
- 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
Space by space, for Houston briefs
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At source
Enclosure, barrier or anti vibration mounts at the machine. Container arrives in Houston itself, so there is no long domestic trucking leg. That is the practical reason a factory in India can be competitive here on landed cost.
- 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. Gypsum on studs is not masonry. It is lighter, it resonates, and it passes low frequency far more easily, so the answer is added mass and a decoupled layer rather than more absorption.
- 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. Compressors, generators and process plant are low frequency and structure-borne. Panels on a wall will not touch that, and we will tell you so rather than sell them to you.
- 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 / Climate and durability
What the Houston climate rules in and rules out
Houston 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 / Read this first
What we watch go wrong on jobs like this
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Absorption on the office wall for a plant room problem
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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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 Houston job
Container arrives in Houston itself, so there is no long domestic trucking leg. That is the practical reason a factory in India can be competitive here on landed cost.
05 / Supply
What the route into Houston actually looks like
| Ships from | Palwal, Haryana, India |
|---|---|
| Arrives at | Port of Houston, then a short road run to site |
| Dispatch | 4 to 7 working days |
| Freight | Sea into Port of Houston |
| Support | Drawings, build-ups, BOQ and material that arrives complete |
Standard items dispatch in 4 to 7 working days. The sea leg to the US Gulf is long, so plan the full door to door window into the programme. We give you real dates, not optimistic ones.
Sea freight direct into the Port of Houston, then a short road run to site. Air freight for samples, colour approvals and genuinely urgent quantities.
Questions from Houston projects
What makes HVAC, plant and machine noise control different in Houston?
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. Container arrives in Houston itself, so there is no long domestic trucking leg. That is the practical reason a factory in India can be competitive here on landed cost.
Where should the budget go first on a Houston 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 Houston?
No. We manufacture in India and supply into Houston. 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 Houston site?
ships from: Palwal, Haryana, India, arrives at: Port of Houston, then a short road run to site, dispatch: 4 to 7 working days. Standard items dispatch in 4 to 7 working days. The sea leg to the US Gulf is long, so plan the full door to door window into the programme. We give you real dates, not optimistic ones.
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
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.