For projects in Norway
HVAC, plant and machine noise control in Norway
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. Balanced mechanical ventilation with heat recovery runs constantly through long heating seasons, so duct noise is always present.
- 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 is, and what it changes in a Norway room
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.
Balanced mechanical ventilation with heat recovery runs constantly through long heating seasons, so duct noise is always present.
Work reaching us from Norway is mostly timber buildings and apartments, offices, schools, healthcare, hotels, studios.
- Timber is light Timber construction passes low frequency easily. Added mass and a decoupled layer do the work, and absorption alone will not.
- Classes are written and checked Work arrives with a target and someone verifies it. Send us the class and we will say plainly where our material sits.
- Sealed through a long winter Ventilation runs constantly in closed buildings, so plant noise matters far more than street noise.
- 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 Norway.
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 Norway, balanced mechanical ventilation with heat recovery runs constantly through long heating seasons, so duct noise is always present.
On a cavity. Mounted on battens with an air gap, which is where the low mid performance comes from.
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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 Norway, church buildings, culture houses and school halls are hard volumes carrying speech and music.
Behind a fabric frame. Where the room has to look finished, absorber inside a frame rather than foam on show.
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Layer 3
Ceiling baffles and clouds
PET felt suspended from the soffit, vertically as baffles or horizontally as clouds. In Norway, classroom acoustics are regulated and taken seriously, with open plan learning spaces making intelligibility the target.
Horizontal clouds. Flat rafts over the occupied zone, which also reflect early speech energy back down where it helps.
We would rather argue about the build-up at design stage than on site. See how we support architects.
03 / In this market
What we see driving Norway briefs
- Timber is light
Timber construction passes low frequency easily. Added mass and a decoupled layer do the work, and absorption alone will not.
- Classes are written and checked
Work arrives with a target and someone verifies it. Send us the class and we will say plainly where our material sits.
- Sealed through a long winter
Ventilation runs constantly in closed buildings, so plant noise matters far more than street noise.
- A long country
A site north of Oslo has a real domestic leg. We quote it separately so the programme is built on actual dates.
- Plant and HVAC
Balanced mechanical ventilation with heat recovery runs constantly through long heating seasons, so duct noise is always present.
04 / Room by room
Space by space, for Norway briefs
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At source
Enclosure, barrier or anti vibration mounts at the machine. Timber construction passes low frequency easily. Added mass and a decoupled layer do the work, and absorption alone will not.
- SoundBlanket mass loaded vinyl, 2100 kg per cubic metre
- Acoustic foam and BassBloc, 20 mm
- Ceiling baffles and clouds, Made to the drawing, standard and custom
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In the path
Duct lining, attenuators and lagging on the first run out of the plant. Work arrives with a target and someone verifies it. Send us the class and we will say plainly where our material sits.
- SoundBlanket mass loaded vinyl, STC 30, 5.25 kg per sq m
- Acoustic foam and BassBloc, 100 kg per cubic metre
- 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. Ventilation runs constantly in closed buildings, so plant noise matters far more than street noise.
- SoundBlanket mass loaded vinyl, STC 34, 8.4 kg per sq m
- Acoustic foam and BassBloc, 100 to 500 Hz
- 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 and durability
What the Norway climate rules in and rules out
Norway is cool and damp, with long heating seasons and cold external walls, and that narrows the material list before acoustics is discussed.
Cold wall build-ups and long heating seasons mean interstitial condensation is a real risk behind any lining. PET felt is unaffected by damp air and will not feed mould where a fabric-faced mineral product would.
The failure we design against here is condensation behind linings in older, poorly insulated stock.
Where a consultant is already engaged on a Norway project, we supply to their specification and send the test reports rather than describing them. More on working with acoustic consultants.
06 / Before you buy
What we watch go wrong on jobs like this
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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.
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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
It sounds like a small detail until the room is finished and the complaint arrives.
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Treating it as a generic Norway job
Timber construction passes low frequency easily. Added mass and a decoupled layer do the work, and absorption alone will not.
05 / Supply
What the route into Norway actually looks like
| Ships from | Palwal, Haryana, India |
|---|---|
| Arrives at | Oslo, then road onward to site |
| Dispatch | 4 to 7 working days |
| Freight | Sea via Oslo |
| Support | Drawings, build-ups, BOQ and material that arrives complete |
Standard items dispatch in 4 to 7 working days. The sea leg from India is long, so plan the full door to door window into the programme. We give real dates, not optimistic ones.
Sea freight into Oslo, then road onward to site. Air freight for samples and urgent quantities.
Questions from Norway projects
What makes HVAC, plant and machine noise control different in Norway?
Balanced mechanical ventilation with heat recovery runs constantly through long heating seasons, so duct noise is always present. Timber construction passes low frequency easily. Added mass and a decoupled layer do the work, and absorption alone will not.
Where should the budget go first on a Norway 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 Norway?
No. We manufacture in India and supply into Norway. 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 Norway site?
ships from: Palwal, Haryana, India, arrives at: Oslo, then road onward to site, dispatch: 4 to 7 working days. Standard items dispatch in 4 to 7 working days. The sea leg from India is long, so plan the full door to door window into the programme. We give 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
Send a plan and a section, get a real build-up
We quote from drawings, not from a square foot rate. Send a plan and the section through the critical wall or ceiling and you will get something you can actually build from.