For projects in Sweden
HVAC, plant and machine noise control in Sweden
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 running through long heating seasons, so duct noise is constant.
- 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
The product, described honestly, for a Sweden brief
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 running through long heating seasons, so duct noise is constant.
Work reaching us from Sweden is mostly timber buildings and apartments, offices, schools, healthcare, hotels, studios.
- Classes are written and verified Projects arrive with a class and someone checks it afterwards. Send us the target and we will say where our material sits against it.
- Timber at scale Sweden builds tall in timber, and timber is light. Low frequency passes easily, so mass and decoupling do the work.
- Sealed through a long winter Ventilation runs constantly in closed buildings, so plant noise matters 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 Sweden.
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 Sweden, balanced mechanical ventilation with heat recovery running through long heating seasons, so duct noise is constant.
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 Sweden, church buildings, culture houses and school halls are hard long-decay volumes.
With a porous backing. Board over mineral backing where the room needs more than the board alone gives.
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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 Sweden, classroom acoustics are regulated, and open plan learning areas make speech intelligibility the design target.
Behind a fabric frame. Where the room has to look finished, absorber inside a frame rather than foam on show.
Architects working in Sweden 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 decides the build-up in Sweden
- Classes are written and verified
Projects arrive with a class and someone checks it afterwards. Send us the target and we will say where our material sits against it.
- Timber at scale
Sweden builds tall in timber, and timber is light. Low frequency passes easily, so mass and decoupling do the work.
- Sealed through a long winter
Ventilation runs constantly in closed buildings, so plant noise matters more than street noise.
- A long country
A site in the north has a real domestic leg. We quote it separately so the dates are honest.
- Plant and HVAC
Balanced mechanical ventilation with heat recovery running through long heating seasons, so duct noise is constant.
04 / Room by room
Room by room, on a typical Sweden job
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At source
Enclosure, barrier or anti vibration mounts at the machine. Projects arrive with a class and someone checks it afterwards. Send us the target and we will say where our material sits against it.
- 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
- 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. Sweden builds tall in timber, and timber is light. Low frequency passes easily, so mass and decoupling do the work.
- 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
- 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 more than street noise.
- Soundproofing materials, Mass, then decoupling, then cavity absorption, then sealing
- Wood wool acoustic panels, 0.30
- Ceiling baffles and clouds, ASTM C423
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 Sweden climate decides the material list
Sweden 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 Sweden project, we supply to their specification and send the test reports rather than describing them. More on working with acoustic consultants.
06 / Read this first
Six mistakes that turn into a second fit-out
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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
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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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 Sweden job
Projects arrive with a class and someone checks it afterwards. Send us the target and we will say where our material sits against it.
05 / Getting it there
How material reaches a Sweden site
| Ships from | Palwal, Haryana, India |
|---|---|
| Arrives at | Gothenburg, then road onward to site |
| Dispatch | 4 to 7 working days |
| Freight | Sea via Gothenburg |
| 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 Gothenburg, then road onward to site. Air freight for samples and urgent quantities.
Questions from Sweden projects
What makes HVAC, plant and machine noise control different in Sweden?
Balanced mechanical ventilation with heat recovery running through long heating seasons, so duct noise is constant. Projects arrive with a class and someone checks it afterwards. Send us the target and we will say where our material sits against it.
Where should the budget go first on a Sweden 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 Sweden?
No. We manufacture in India and supply into Sweden. 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 Sweden site?
ships from: Palwal, Haryana, India, arrives at: Gothenburg, 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 the drawings, get a straight answer
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.